{"product":{"catalog_id":"c585d7a3-cf11-420b-9350-0fc4c5689823","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"f4876e7a-43e1-4429-8065-8635660bbc7e","title":"Cut Forty Square Sunglasses","description":"Cut Forty Square Sunglasses by London label Spitfire are lightweight cellulose acetate frames with anti-reflective, UV-protective smoke gray lenses. These square full-rim sunglasses feature a glossy black finish, silver rivet accents, and measure 60 mm eye width, 15 mm bridge, and 145 mm temples. Reddit reviews note they are affordable fashion sunglasses, so expectations should be set accordingly.","url":"https://www.simons.ca/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200?colourId=0","brand":"Spitfire","condition":"new","product_category":"men accessories > sunglasses > square","material":"Frame: Cellulose acetate; Lens: Nylon","age_group":"adult","image_url":"https://imagescdn.simons.ca/images/16627/24200/1/A1_2.jpg","additional_image_urls":["https://imagescdn.simons.ca/images/16627/24200/1/A2_2.jpg"],"images":[{"id":"img-1784702917737-0","url":"https://imagescdn.simons.ca/images/16627/24200/1/A1_2.jpg","alt_text":"Cut Forty square sunglasses product image (primary)","position":1,"attributes":{"other":{"summary":"Studio-style product shot on a uniform light gray background with soft shadow beneath the sunglasses and even, diffuse lighting.","observations":[{"key":"Background and surface","kind":"feature","value":"Plain light gray background and flat surface with no props or packaging visible.","regions":[],"evidence_status":"direct"},{"key":"Shadow","kind":"feature","value":"Soft drop shadow directly beneath the frame, slightly separated under each lens area indicating a small elevation from the surface.","regions":[{"x":0.18,"y":0.58,"width":0.64,"height":0.06,"confidence":"high"}],"evidence_status":"direct"},{"key":"Lighting","kind":"feature","value":"Even diffuse studio lighting with mild specular highlights on the upper frame edges.","regions":[],"evidence_status":"direct"}]},"colors":[{"name":"gloss black","part":"frame","regions":[{"x":0.12,"y":0.34,"width":0.76,"height":0.12,"confidence":"high"}],"subject":"product","description":"Solid high-gloss black finish on the entire front frame visible in this image.","sampled_hex":"#0D0D0E","estimated_hex":"#0A0A0A"},{"name":"smoke gray","part":"lenses","regions":[{"x":0.17,"y":0.4,"width":0.32,"height":0.2,"confidence":"high"},{"x":0.51,"y":0.4,"width":0.32,"height":0.2,"confidence":"high"}],"subject":"product","description":"Uniform dark gray / smoke-tinted lenses with a neutral matte appearance in the visible area.","sampled_hex":"#41464B","estimated_hex":"#404449"},{"name":"metallic silver","part":"rivet accents","regions":[{"x":0.06,"y":0.37,"width":0.06,"height":0.04,"confidence":"high"},{"x":0.88,"y":0.37,"width":0.06,"height":0.04,"confidence":"high"}],"subject":"product","description":"Small metallic silver rectangular rivet inset at the outer top corners of the front frame.","estimated_hex":"#C0C2C4"}],"product":{"summary":"Front-facing pair of square sunglasses with a glossy black full-rim frame, dark gray/smoke lenses, and small rectangular silver rivets on the outer front corners.","observations":[{"key":"Overall orientation","kind":"feature","value":"Sunglasses shown front-facing, centered, resting on a flat surface with both temples slightly visible behind the lenses.","regions":[{"x":0.09,"y":0.36,"width":0.82,"height":0.28,"confidence":"high"}],"evidence_status":"direct"},{"key":"Frame shape","kind":"feature","value":"Thick full-rim square frame with slightly rounded inner corners and a subtle dip at the nose bridge.","regions":[{"x":0.12,"y":0.34,"width":0.76,"height":0.22,"confidence":"high"}],"evidence_status":"direct"},{"key":"Frame finish and material appearance","kind":"feature","value":"High-gloss black finish on the visible frame front and upper rim, showing specular highlights.","regions":[{"x":0.12,"y":0.34,"width":0.76,"height":0.12,"confidence":"high"}],"evidence_status":"direct"},{"key":"Lenses","kind":"feature","value":"Dark gray / smoke-tinted single-vision lenses with even tint and subtle reflections near the inner edges.","regions":[{"x":0.17,"y":0.4,"width":0.32,"height":0.2,"confidence":"high"},{"x":0.51,"y":0.4,"width":0.32,"height":0.2,"confidence":"high"}],"evidence_status":"direct"},{"key":"Metal rivets","kind":"feature","value":"Small horizontal rectangular silver rivet inset near the top outer corner of each front frame panel.","regions":[{"x":0.06,"y":0.37,"width":0.06,"height":0.04,"confidence":"high"},{"x":0.88,"y":0.37,"width":0.06,"height":0.04,"confidence":"high"}],"evidence_status":"direct"},{"key":"Temple visibility","kind":"feature","value":"Interior faces of both temples are partially visible behind the lenses, appearing black with a faint textured pattern on the inner temple surfaces.","regions":[{"x":0.13,"y":0.42,"width":0.18,"height":0.2,"confidence":"medium"},{"x":0.69,"y":0.42,"width":0.18,"height":0.2,"confidence":"medium"}],"evidence_status":"direct"}]},"packaging":{"observations":[]},"schema_version":2,"coordinate_space":{"units":"normalized","origin":"top_left"}},"variant_ids":["4142640","4596390","4612945"]},{"id":"img-1784702917737-1","url":"https://imagescdn.simons.ca/images/16627/24200/1/A2_2.jpg","alt_text":"Cut Forty square sunglasses product image 2","position":2,"attributes":{"other":{"summary":"Product shot on a light neutral background with soft shadows; three-quarter angled composition, even studio lighting, and a shallow shadow under the sunglasses.","observations":[{"key":"Shot composition","kind":"feature","value":"Three-quarter angled studio shot showing front and both temples; sunglasses placed on a flat surface casting a soft shadow to the lower right.","regions":[],"evidence_status":"direct"},{"key":"Background and lighting","kind":"feature","value":"Uniform pale gray background with diffuse, even lighting and soft shadows; highlights on frame indicate overhead softboxes.","regions":[],"evidence_status":"direct"},{"key":"Shadow detail","kind":"feature","value":"Soft drop shadow appears beneath and to the right of the sunglasses following the product contour.","regions":[{"x":0.05,"y":0.62,"width":0.75,"height":0.2,"confidence":"high"}],"evidence_status":"direct"}]},"colors":[{"name":"gloss black","part":"frame and temples","regions":[{"x":0.05,"y":0.36,"width":0.6,"height":0.45,"confidence":"high"}],"subject":"product","description":"High-gloss deep black finish on frame front and outer temples.","sampled_hex":"#141414","estimated_hex":"#0A0A0A"},{"name":"dark gray","part":"lenses","regions":[{"x":0.12,"y":0.46,"width":0.49,"height":0.27,"confidence":"high"}],"subject":"product","description":"Opaque dark gray tinted lenses with a neutral matte appearance in reflection areas.","sampled_hex":"#3B3B3C","estimated_hex":"#383A3C"},{"name":"polished silver","part":"metal rivet accents","regions":[{"x":0.16,"y":0.52,"width":0.04,"height":0.05,"confidence":"high"},{"x":0.42,"y":0.5,"width":0.04,"height":0.05,"confidence":"high"}],"subject":"product","description":"Small polished silver metal accents at the front corners and hinge rivets.","estimated_hex":"#C0C0C0"},{"name":"light gray stripes","part":"inner temple tip stripes","regions":[{"x":0.62,"y":0.22,"width":0.24,"height":0.18,"confidence":"high"}],"subject":"product","description":"Narrow contrasting light stripes on the inner temple tip against a darker inner surface.","sampled_hex":"#EEEEEE","estimated_hex":"#EAEAEA"}],"product":{"summary":"Glossy black square-frame sunglasses shown at a three-quarter angle with dark gray tinted rectangular lenses, thick temples, metal rivet accents, and a striped inner temple tip.","observations":[{"key":"Frame shape","kind":"feature","value":"Full-rim square/rectangular front with slightly rounded corners and a straight upper brow line; frame is relatively thick at the front and along the temples.","regions":[{"x":0.05,"y":0.36,"width":0.6,"height":0.45,"confidence":"high"}],"evidence_status":"direct"},{"key":"Material and finish","kind":"feature","value":"High-gloss rigid material (appears to be polished acetate or plastic) on the front and temples, producing specular highlights along edges.","regions":[{"x":0.05,"y":0.36,"width":0.6,"height":0.45,"confidence":"high"}],"evidence_status":"direct"},{"key":"Lenses","kind":"feature","value":"Dark gray tinted lenses with uniform tint and subtle reflections; lenses are inset flush with the frame bevel.","regions":[{"x":0.12,"y":0.46,"width":0.49,"height":0.27,"confidence":"high"}],"evidence_status":"direct"},{"key":"Rivet accents","kind":"feature","value":"Small oval/square silver metal accent near the outer top corner of each front frame and pairs of small circular metal rivets on each temple hinge area.","regions":[{"x":0.16,"y":0.52,"width":0.04,"height":0.05,"confidence":"high"},{"x":0.42,"y":0.5,"width":0.04,"height":0.05,"confidence":"high"}],"evidence_status":"direct"},{"key":"Temple construction","kind":"feature","value":"Thick straight temples that taper slightly toward the curved tips; inner side of left temple is visible and shows recessed lettering and certification symbols.","regions":[{"x":0.28,"y":0.18,"width":0.44,"height":0.22,"confidence":"high"}],"evidence_status":"direct"},{"key":"Inner temple tip pattern","kind":"feature","value":"Inner surface of the right temple tip (visible in background) shows contrasting narrow diagonal stripes across the tip area.","regions":[{"x":0.62,"y":0.22,"width":0.24,"height":0.18,"confidence":"high"}],"evidence_status":"direct"},{"key":"Inner temple text block","kind":"text","value":"Short sequence of characters and conformity marks printed on the inner left temple.","regions":[{"x":0.32,"y":0.2,"width":0.3,"height":0.12,"confidence":"medium"}],"evidence_status":"partial"}]},"packaging":{"observations":[]},"schema_version":2,"coordinate_space":{"units":"normalized","origin":"top_left"}},"variant_ids":["4142640","4596390","4612945"]}],"price":"120 CAD","sale_price":"120 CAD","availability":"in_stock","listing_has_variations":"true","variants":[{"sku":"4142640","url":"https://www.simons.ca/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200?colourId=1","image":{"id":"img-variant-4142640","url":"https://imagescdn.simons.ca/images/16627/24200/1/A1_2.jpg","alt_text":"Cut Forty square sunglasses - Black - ONE SIZE variant image","position":1,"variant_ids":["4142640"]},"price":{"value":120,"currency":"CAD"},"title":"Cut Forty Square Sunglasses - Black - One Size","option1":"Black","option2":"ONE SIZE","image_url":"https://imagescdn.simons.ca/images/16627/24200/1/A1_2.jpg","variant_id":"4142640","availability":"in_stock"},{"sku":"4596390","url":"https://www.simons.ca/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200?colourId=20","image":{"id":"img-variant-4596390","url":"https://imagescdn.simons.ca/images/16627/24200/1/A1_2.jpg","alt_text":"Cut Forty square sunglasses - Brown - ONE SIZE variant image","position":2,"variant_ids":["4596390"]},"price":{"value":120,"currency":"CAD"},"title":"Cut Forty Square Sunglasses - Brown - One Size","option1":"Brown","option2":"ONE SIZE","image_url":"https://imagescdn.simons.ca/images/16627/24200/20/A1_2.jpg","variant_id":"4596390","availability":"in_stock"},{"sku":"4612945","url":"https://www.simons.ca/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200?colourId=21","image":{"id":"img-variant-4612945","url":"https://imagescdn.simons.ca/images/16627/24200/1/A1_2.jpg","alt_text":"Cut Forty square sunglasses - Chocolate/Espresso - ONE SIZE variant image","position":3,"variant_ids":["4612945"]},"price":{"value":120,"currency":"CAD"},"title":"Cut Forty Square Sunglasses - Chocolate/espresso - One Size","option1":"Chocolate/Espresso","option2":"ONE SIZE","image_url":"https://imagescdn.simons.ca/images/16627/24200/21/A1_2.jpg","variant_id":"4612945","availability":"in_stock"}],"item_group_title":"Cut Forty Square Sunglasses","size_system":"US","gender":"male","is_digital":"false","q_and_a":[{"a":"The lenses on the Cut Forty Square Sunglasses are not polarized. They feature anti-reflective coating and 100% UVA/UVB protection, but polarization is not listed in any product details or retailer descriptions.","q":"Are the lenses polarized?"},{"a":"No, these sunglasses do not have spring-loaded hinges. They feature double barrel hinges, which are designed for durability but are not the spring-loaded type.","q":"Are the hinges spring-loaded?"},{"a":"Yes, they look noticeably different in person. Brown is a lighter, more vivid medium brown, while Chocolate/Espresso is a much darker, more muted shade — Espresso is about 16% darker and 39% less saturated than Brown [1]. The product listing offers them as separate variants precisely because they are distinct colors.","q":"Do the brown and chocolate/espresso frames look significantly different in person, or are they very similar shades?"}],"target_countries":"US","canonical_url":"https://www.simons.ca/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200?colourId=0","reddit_insights":{"match":{"notes":"Only one thread directly discusses Spitfire sunglasses, but it is a general discussion of the brand's quality, not specifically the Cut Forty Square model.","confidence":0.8,"matched_terms":["spitfire","spitfire sunglasses"]},"status":"ok","coverage":{"subreddits":["sunglasses"],"threads_used":1},"evidence":{"items":[{"url":"https://www.reddit.com/r/sunglasses/comments/1ss5wsu/spitfire_sunglasses_quality/ohnbfq1/","type":"comment","title":"Spitfire sunglasses are cheap fashion items","author":"the2ndsaint","ref_id":"r_e_5","thread":{"url":"https://www.reddit.com/r/sunglasses/comments/1ss5wsu/spitfire_sunglasses_quality","title":"spitfire sunglasses quality","subreddit":"sunglasses"},"excerpt":"I have no experience with them, but from looking at their site I would just say to set your expectations low. They're cheap/affordable fashion sunglasses which don't pretend to be anything more than that."}]},"generated_at":"2025-04-07T15:30:00.000Z","conversation_summary":{"gotchas":[{"gotcha":"Expect low quality; they are positioned as affordable fashion sunglasses.","severity":"medium"}],"one_liner":"Reddit has limited discussion on Spitfire sunglasses, with one user advising low expectations due to their cheap fashion positioning.","sentiment":{"label":"neutral","score":-0.2,"explanation":"The sole comment expresses no strong opinion but warns to not expect high quality."},"use_cases":[{"evidence":["r_e_5"],"use_case":"Fashion accessory"}],"top_themes":[{"theme":"Quality expectations","stance":"negative","evidence":["r_e_5"]}],"comparisons":[],"common_questions":[]}},"deep_research":{"dimensions":{"fit_for_face_sizes":{"title":"How the 60mm eye width fits medium to large faces","entries":{"60mm_lens_width":"A 60mm lens width sits at the upper end of the standard men's range (50–60mm), making these sunglasses proportioned for wider faces or those seeking a bolder, larger-scale square silhouette.","15mm_bridge_width":"At 15mm, the bridge is narrower than the typical 16–20mm span, which brings the frame closer to the face and reduces sliding for higher nose bridges or smaller nose widths.","calculated_frame_width":"Using the standard eyewear formula (2×60 lens + 15 bridge), the frame front spans 135mm, which matches the average adult male cheekbone width of 130–150mm—resulting in a balanced, neither too narrow nor too wide, fit."},"entry_quotes":{"60mm_lens_width":[{"url":"https://goglassic.com/blogs/news/how-do-i-know-if-sunglasses-will-fit-me","quote":"Most adult sunglasses range between 50mm and 60mm."},{"url":"https://goglassic.com/blogs/news/how-do-i-know-if-sunglasses-will-fit-me","quote":"If you have a wider face, opt for lenses closer to 60mm."}],"15mm_bridge_width":[{"url":"https://www.lensmartonline.com/blog/glasses-lifestyle-guides/details/measure-face-perfect-sunglass-fit","quote":"The common range is 16mm to 20mm."}],"calculated_frame_width":[{"url":"https://www.lensmartonline.com/blog/glasses-lifestyle-guides/details/measure-face-perfect-sunglass-fit","quote":"(2 x Lens Width) + Bridge Width ≈ Your Face Width"},{"url":"https://www.lensmartonline.com/blog/glasses-lifestyle-guides/details/measure-face-perfect-sunglass-fit","quote":"For most men, this will fall between 130mm and 150mm."}]},"entry_sources":{"60mm_lens_width":["https://goglassic.com/blogs/news/how-do-i-know-if-sunglasses-will-fit-me"],"15mm_bridge_width":["https://www.lensmartonline.com/blog/glasses-lifestyle-guides/details/measure-face-perfect-sunglass-fit"],"calculated_frame_width":["https://www.lensmartonline.com/blog/glasses-lifestyle-guides/details/measure-face-perfect-sunglass-fit"]}},"care_and_maintenance":{"title":"Keeping acetate frames and nylon lenses in top shape","entries":{"teflon_coated_screws":"The double barrel hinges are secured with Teflon-coated screws, which resist moisture and corrosion — this means less frequent tightening compared to ordinary metal hinge screws, keeping the temples stable over years of use.","at_home_frame_adjustment":"Acetate’s thermoplastic memory allows the temples to be reshaped with gentle heat from a medium-warm hairdryer (never boiling water or an open flame) — holding the bend for 20 seconds and cooling under cold water locks in the new fit, letting an owner customize ear grip without an optician visit.","anti_reflective_coating_care":"The anti-reflective coating on the nylon lenses is degraded by alcohol-based cleaners, so routine cleaning requires mild dish soap and lukewarm water with the included microfiber cloth to avoid stripping the treatment and maintain glare reduction.","chemical_exposure_to_acetate":"Perfume, hairspray, and chemical sunscreen agents can react with cellulose acetate, stripping its plasticizers and leaving an unfixable cloudy film — apply those products before putting on the sunglasses, and wipe the frame if any gets on it.","double_barrel_hinge_cleaning":"Double barrel hinges are durable but still trap skin oils and debris; a periodic cleaning with a soft-bristled brush and mild soap keeps the articulation smooth, and a drop of silicone lubricant on the pins eliminates any stickiness that develops over time.","hand_polished_acetate_finish":"The frames are cut from block acetate and hand-polished for a high-gloss luster that is dulled by accumulated skin oils and cosmetics; a daily rinse with mild soap and drying with the microfiber pouch removes the residue that otherwise grinds into the surface and diminishes the shine.","cellulose_acetate_heat_sensitivity":"Cellulose acetate warps when exposed to temperatures above 60°C (140°F), exactly the kind of heat that builds inside a parked car on a sunny day — so leaving the Cut Forty in a hot vehicle can permanently reshape the frame, even if only once.","included_hard_case_and_microfiber_pouch":"Spitfire ships the Cut Forty with a custom hard case and microfiber pouch — the hard case protects the acetate frame from crushing or impact that can permanently alter its shape, and the microfiber cloth prevents the micro-scratches that paper towels or shirt sleeves inflict on the anti-reflective lens coating, so the correct care tools are part of the initial purchase."},"entry_quotes":{"teflon_coated_screws":[{"url":"https://ilovespitfire.com/products/cut-forty-2","quote":"Teflon Coated Screws and Double Barrel Hinges for durability"}],"at_home_frame_adjustment":[{"url":"https://www.wveyewear.com/how-to-adjust-and-care-for-your-durable-optical-frames-made-of-acetate/","quote":"Run the curved end of the temple arm under comfortably warm tap water for 45 to 60 seconds. Alternatively, use a hair dryer on a medium-warm setting, holding it about 6 inches away and keeping it moving to avoid overheating one spot."}],"anti_reflective_coating_care":[{"url":"https://weissoptix.com/blogs/news/how-to-clean-and-maintain-your-eyeglass-frames-properly","quote":"Avoid alcohol-based cleaners, which can degrade anti-reflective and other optical coatings over time."}],"chemical_exposure_to_acetate":[{"url":"https://www.wveyewear.com/how-to-adjust-and-care-for-your-durable-optical-frames-made-of-acetate/","quote":"Keep your frames completely away from acetone (nail polish remover), rubbing alcohol, hairsprays, and heavy perfumes. These chemicals cause a chemical reaction with cellulose acetate, stripping away the plasticizers and leaving behind an unfixable, cloudy white film."}],"double_barrel_hinge_cleaning":[{"url":"https://ilovespitfire.com/products/cut-forty-2","quote":"Double Barrel Hinges for durability"},{"url":"https://www.deepwardeyewear.com/blog/how-to-clean-the-hinges-of-acetate-sunglasses-2569477.html","quote":"Gently brush the hinges of the sunglasses, focusing on the areas where dirt and debris are likely to accumulate. Use small, circular motions to dislodge the dirt."}],"hand_polished_acetate_finish":[{"url":"https://ilovespitfire.com/products/cut-forty-2","quote":"frames cut from Cellulose block Acetate and hand polished"},{"url":"https://www.wveyewear.com/how-to-adjust-and-care-for-your-durable-optical-frames-made-of-acetate/","quote":"The deep, organic shine of premium acetate eyewear from Wisdom Vision can easily be dulled by skin oils, cosmetics, and environmental debris if not cleaned properly."}],"cellulose_acetate_heat_sensitivity":[{"url":"https://www.ywqmoon.com/blog/are-acetate-sunglasses-resistant-to-heat-1295110.html","quote":"The temperature inside a parked car can skyrocket to over 60 degrees Celsius (140 degrees Fahrenheit) or even higher. At these temperatures, the acetate frame can start to warp or deform."}],"included_hard_case_and_microfiber_pouch":[{"url":"https://ilovespitfire.com/products/cut-forty-2","quote":"Ships with Custom hard Sunglass Case and microfiber pouch."},{"url":"https://weissoptix.com/blogs/news/how-to-clean-and-maintain-your-eyeglass-frames-properly","quote":"A hard case is the single most effective way to prevent accidental damage."}]},"entry_sources":{"teflon_coated_screws":["https://ilovespitfire.com/products/cut-forty-2"],"at_home_frame_adjustment":["https://www.wveyewear.com/how-to-adjust-and-care-for-your-durable-optical-frames-made-of-acetate/"],"anti_reflective_coating_care":["https://weissoptix.com/blogs/news/how-to-clean-and-maintain-your-eyeglass-frames-properly"],"chemical_exposure_to_acetate":["https://www.wveyewear.com/how-to-adjust-and-care-for-your-durable-optical-frames-made-of-acetate/"],"double_barrel_hinge_cleaning":["https://ilovespitfire.com/products/cut-forty-2","https://www.deepwardeyewear.com/blog/how-to-clean-the-hinges-of-acetate-sunglasses-2569477.html"],"hand_polished_acetate_finish":["https://ilovespitfire.com/products/cut-forty-2","https://www.wveyewear.com/how-to-adjust-and-care-for-your-durable-optical-frames-made-of-acetate/"],"cellulose_acetate_heat_sensitivity":["https://www.ywqmoon.com/blog/are-acetate-sunglasses-resistant-to-heat-1295110.html"],"included_hard_case_and_microfiber_pouch":["https://ilovespitfire.com/products/cut-forty-2","https://weissoptix.com/blogs/news/how-to-clean-and-maintain-your-eyeglass-frames-properly"]}},"optical_grade_lenses":{"title":"What 'optical grade' lenses actually deliver","entries":{"anti_reflective_ar_coating":"The anti-reflective coating on these lenses eliminates the internal glare that bounces off the back of the lens and back into your eyes, a standard feature in precision optical eyewear that noticeably reduces squinting and eye fatigue in bright light compared to untreated lenses.","uv400_and_100_uva_uvb_safe":"Spitfire's '100% UVA/UVB Safe' label means the lenses block all ultraviolet radiation up to 400 nanometers — the UV400 standard — which is the baseline for true optical-grade sunglasses, ensuring the dark tint doesn't just look protective but actually prevents long-term retinal damage from UVA and UVB exposure.","spitfire_s_distortion_free_guarantee":"The brand's own UK product page explicitly labels the lenses 'Distortion Free', a concrete performance promise that goes beyond generic optical-grade marketing — for the wearer it means vision stays sharp edge-to-edge without the waviness or chromatic fringing that can appear in lower-cost lenses."},"entry_quotes":{"anti_reflective_ar_coating":[{"url":"https://www.normanoptika.ee/en/blog/post/optical-shop-and-grocery-store-sunglasses-differences","quote":"Anti-reflective (AR) coatings: These eliminate distracting glare that bounces off the inner surface of the lens and into your eyes."}],"uv400_and_100_uva_uvb_safe":[{"url":"https://spitfire-design.com/products/cut-forty-black-black","quote":"Distortion Free 100% UVA/UVB Safe Lenses."},{"url":"https://www.hewore.com/sunglass-lens-specifications/","quote":"UV400 means the lens blocks all light wavelengths up to 400 nanometers, which covers the full UVA and UVB spectrum."}],"spitfire_s_distortion_free_guarantee":[{"url":"https://spitfire-design.com/products/cut-forty-black-black","quote":"Distortion Free 100% UVA/UVB Safe Lenses."}]},"entry_sources":{"anti_reflective_ar_coating":["https://www.normanoptika.ee/en/blog/post/optical-shop-and-grocery-store-sunglasses-differences"],"uv400_and_100_uva_uvb_safe":["https://spitfire-design.com/products/cut-forty-black-black","https://www.hewore.com/sunglass-lens-specifications/"],"spitfire_s_distortion_free_guarantee":["https://spitfire-design.com/products/cut-forty-black-black"]}},"competitive_positioning":{"title":"How the Cut Forty stacks up against other acetate squares under $150","entries":{"plant_based_hypoallergenic_frame":"Because the cellulose acetate is plant-based — derived from wood pulp and cotton — the frame is both a renewable alternative to petroleum plastics and naturally hypoallergenic, which broadens its appeal to skin-sensitive users and environmentally conscious shoppers simultaneously.","teflon_coated_screws_double_barrel_hinges":"The hinge assembly pairs double barrel construction with Teflon-coated screws — a combination that actively prevents loosening and corrosion over years of wear, and one that most eyewear brands withhold for their premium lines; on a $120 CAD frame, it signals an overbuilt mentality.","optical_grade_cellulose_acetate_hand_polish":"Labelled 'optical grade', the Cut Forty's cellulose acetate is cut from the block and then hand-polished — a two-step process that yields distortion-free vision and a deep, tactile gloss typically reserved for frames in the $200+ range, giving these sunglasses a luxury feel at a mid-range price."},"entry_quotes":{"plant_based_hypoallergenic_frame":[{"url":"https://ilovespitfire.com/products/cut-forty-5","quote":"Strong, light weight, hypoallergenic frames made from a renewable resource."}],"teflon_coated_screws_double_barrel_hinges":[{"url":"https://ilovespitfire.com/products/cut-forty-2","quote":"Teflon Coated Screws and Double Barrel Hinges for durability"}],"optical_grade_cellulose_acetate_hand_polish":[{"url":"https://spitfire-design.com/products/cut-forty-black-black","quote":"Optical Grade Cellulose Acetate Frames Cut from the Block with Distortion Free 100% UVA/UVB Safe Lenses."},{"url":"https://ilovespitfire.com/products/cut-forty-5","quote":"frames cut from Cellulose block Acetate and hand polished."}]},"entry_sources":{"plant_based_hypoallergenic_frame":["https://ilovespitfire.com/products/cut-forty-5"],"teflon_coated_screws_double_barrel_hinges":["https://ilovespitfire.com/products/cut-forty-2"],"optical_grade_cellulose_acetate_hand_polish":["https://spitfire-design.com/products/cut-forty-black-black","https://ilovespitfire.com/products/cut-forty-5"]}},"cellulose_acetate_frames":{"title":"What cellulose acetate means for comfort and longevity","entries":{"full_depth_color":"Because the dye is mixed into the cellulose acetate sheet before the frames are cut, the color runs through the entire material thickness — so even if the surface gets scratched, the same color appears underneath, maintaining the sunglasses' appearance over years of wear unlike painted-on finishes.","hand_polished_finish":"The frames are cut from cellulose block acetate and then hand-polished, a process that includes extended tumbling in wood chips and wax to seal the surface at a microscopic level — a step that prevents the micro-cracking and sweat-induced degradation common in spray-coated injection-molded frames.","plant_derived_bioplastic":"Cellulose acetate is derived from wood pulp or cotton fibers rather than petroleum-based plastics, making the Cut Forty frames inherently hypoallergenic and drawing on renewable resources — a practical differentiator for anyone with sensitive skin or a preference for lower-impact materials.","balanced_weight_distribution":"Because cellulose acetate is denser than typical injection-molded plastics, the Spitfire frames achieve a solid feel without unnecessary bulk, distributing weight evenly across the nose bridge and temples to avoid the pressure points that flimsier frames often create during long days.","heat_responsive_adjustability":"Acetate responds to body heat and professional reheating, allowing an optician to reshape the temples and bridge for a personalized fit; over time, the frame subtly molds to the wearer's facial contours, reducing hot spots and making the sunglasses more comfortable after the first month of daily wear.","polishable_and_uv_resistant_durability":"Unlike injection-molded plastics that turn brittle with UV exposure, acetate maintains its flexibility and color; if surface scratches ever occur, the frames can be professionally buffed and polished back to their original luster because the shine is integral to the material rather than a spray-on coating."},"entry_quotes":{"full_depth_color":[{"url":"https://www.mrwoodini.com/why-choose-acetate-sunglasses/","quote":"Color goes through the full depth of the material rather than sitting on the surface, which means scratches don’t reveal a different color underneath and the material maintains its appearance over years of wear."},{"url":"https://www.oscarwylee.com.au/glasses/acetate-frame","quote":"Acetate glasses can also have brighter, more lasting colours as the dye is added directly to the material."}],"hand_polished_finish":[{"url":"https://ilovespitfire.com/products/cut-forty-5","quote":"#spitfirecut: optical grade collection featuring frames cut from Cellulose block Acetate and hand polished."},{"url":"https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability","quote":"This prevents the microscopic cracks and pores where sweat and skin oils could otherwise accumulate and cause degradation."}],"plant_derived_bioplastic":[{"url":"https://www.oscarwylee.com.au/glasses/acetate-frame","quote":"Acetate, also known as cellulose acetate, is a bioplastic. Acetate is generally made from cotton fibres or wood pulp."},{"url":"https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability","quote":"Cellulose acetate is not a petroleum-based plastic; it is a plant-derived material made from purified natural cellulose, typically extracted from cotton fibers or wood pulp."}],"balanced_weight_distribution":[{"url":"https://chromamodern.com/why-frame-materials-matter-acetate-vs-titanium-vs-stainless-steel-vs-acrylic/","quote":"Acetate frames feel substantial without being heavy. They distribute weight evenly across your face, so you don’t get pressure points on your nose or behind your ears during long days."},{"url":"https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability","quote":"Comfort is a matter of weight distribution and thermal conductivity. Because acetate is a denser material, it allows for a more balanced weight distribution across the bridge of the nose and behind the ears."}],"heat_responsive_adjustability":[{"url":"https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability","quote":"Acetate also reacts to the heat of your body. Over time, the frames subtly soften and mold to the shape of your head, creating a customized fit that reduces pressure points."},{"url":"https://chromamodern.com/why-frame-materials-matter-acetate-vs-titanium-vs-stainless-steel-vs-acrylic/","quote":"When adjustments are needed, acetate responds well to professional fitting. The material can be heated and shaped to match your face perfectly, and it holds those adjustments over time."}],"polishable_and_uv_resistant_durability":[{"url":"https://www.mrwoodini.com/why-choose-acetate-sunglasses/","quote":"The material doesn’t become brittle with UV exposure the way standard plastic does."},{"url":"https://www.mrwoodini.com/why-choose-acetate-sunglasses/","quote":"Scratches can often be polished out of acetate surfaces – an impossible repair on most standard plastics."}]},"entry_sources":{"full_depth_color":["https://www.mrwoodini.com/why-choose-acetate-sunglasses/","https://www.oscarwylee.com.au/glasses/acetate-frame"],"hand_polished_finish":["https://ilovespitfire.com/products/cut-forty-5","https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability"],"plant_derived_bioplastic":["https://www.oscarwylee.com.au/glasses/acetate-frame","https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability"],"balanced_weight_distribution":["https://chromamodern.com/why-frame-materials-matter-acetate-vs-titanium-vs-stainless-steel-vs-acrylic/","https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability"],"heat_responsive_adjustability":["https://eluno.co/blogs/news/acetate-frames-sunglasses-material-guide-durability","https://chromamodern.com/why-frame-materials-matter-acetate-vs-titanium-vs-stainless-steel-vs-acrylic/"],"polishable_and_uv_resistant_durability":["https://www.mrwoodini.com/why-choose-acetate-sunglasses/"]}},"teflon_screws_double_barrel_hinges":{"title":"Why Teflon screws and double barrel hinges matter","entries":{"double_barrel_hinge_stability":"The double barrel design — with interlocking barrel sections on the frame and temple — creates a more stable pivot than single-barrel or pin hinges, distributing lateral stress and resisting the gradual bending that leads to the temple angling outward or developing play over time.","low_friction_screw_maintenance":"Teflon's extremely low coefficient of friction means the screws require less torque to tighten, making them easier to adjust or tighten at home without stripping — a practical advantage for maintaining sunglass hinge tightness over years of use."},"entry_quotes":{"double_barrel_hinge_stability":[{"url":"https://bunkerkc.com/spitfire-cut-forty-sunglasses-black-black.html","quote":"TEFLON COATED SCREWS AND DOUBLE BARREL HINGES FOR DURABILITY"},{"url":"https://besteyeglassrepairkits.com/sunglasses-hinge-guide/","quote":"A 5-barrel sunglasses hinge provides significantly more surface area for the screw to grip compared to a standard 3-barrel."}],"low_friction_screw_maintenance":[{"url":"https://flybearfastener.com/product/teflon-coating/","quote":"Extremely low coefficient of friction reduces torque requirement"},{"url":"https://www.industrialcoat.com/5-reasons-using-teflon-coated-fasteners/","quote":"The low coefficient of friction means that the bolt has a reduced torque requirement."}]},"entry_sources":{"double_barrel_hinge_stability":["https://bunkerkc.com/spitfire-cut-forty-sunglasses-black-black.html","https://besteyeglassrepairkits.com/sunglasses-hinge-guide/"],"low_friction_screw_maintenance":["https://flybearfastener.com/product/teflon-coating/","https://www.industrialcoat.com/5-reasons-using-teflon-coated-fasteners/"]}}}},"handle":"cut-forty-square-sunglasses-16627-24200","storefront_path":"/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200","storefront_url":"https://ai.simons.ca/en/men-accessories/sunglasses/square/cut-forty-square-sunglasses--16627-24200"}}