{"product":{"catalog_id":"29ef5606-a5af-4e25-a89f-9094ed21f716","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"5ab75334-d734-43e6-a4a4-851c0dd8b2af","title":"Kubu Round Sunglasses","description":"The Kubu Round Sunglasses from Meller at Simons are unisex glasses with a glossy black biosourced acetate frame and grey polarized lenses, providing glare-free vision and UV400 protection. The lenses are treated to be water-repellent and scratch-resistant, while the frame remains lightweight and comfortable. With an eye width of 50 mm, bridge of 22 mm, and temple length of 142 mm, they include a case and cleaning cloth.","url":"https://www.simons.ca/en/men-accessories/sunglasses/round/kubu-round-sunglasses--23297-26202?colourId=0","brand":"Meller","condition":"new","product_category":"men accessories > sunglasses > round","material":"Bio-based acetate, cellulose propionate","age_group":"adult","image_url":"https://imagescdn.simons.ca/images/23297/26202/1/A1_2.jpg","additional_image_urls":[],"images":[{"id":"img-1784702927607-0","url":"https://imagescdn.simons.ca/images/23297/26202/1/A1_2.jpg","alt_text":"Kubu round sunglasses product image (primary)","position":1,"attributes":{"other":{"summary":"Product photographed on a neutral light grey background with soft shadow beneath; three-quarter front-right angle with even studio lighting.","observations":[{"key":"Shot composition","kind":"feature","value":"Sunglasses placed flat on surface, viewed from slightly above at a three-quarter front-right angle so both lenses and temple visible.","regions":[],"evidence_status":"direct"},{"key":"Background","kind":"feature","value":"Even light grey background with a soft shadow under the product running roughly diagonally from left-front to right-rear.","regions":[],"evidence_status":"direct"},{"key":"Lighting and reflections","kind":"feature","value":"Soft studio lighting producing subtle highlights on glossy frame edges and faint, diffuse reflections on lens surfaces.","regions":[],"evidence_status":"direct"}]},"colors":[{"name":"gloss black","part":"frame and temples","regions":[{"x":0.08,"y":0.44,"width":0.84,"height":0.36,"confidence":"high"}],"subject":"product","description":"Glossy solid black finish on full rims and temples producing specular highlights.","estimated_hex":"#0B0B0B"},{"name":"smoke grey","part":"lenses","regions":[{"x":0.18,"y":0.53,"width":0.28,"height":0.3,"confidence":"high"},{"x":0.44,"y":0.52,"width":0.3,"height":0.28,"confidence":"high"}],"subject":"product","description":"Uniform medium-dark grey tinted lenses with a neutral matte-appearing transmission.","sampled_hex":"#7B848B","estimated_hex":"#6F7B82"},{"name":"metallic gold","part":"outer temple text","regions":[{"x":0.64,"y":0.54,"width":0.16,"height":0.06,"confidence":"high"}],"subject":"product","description":"Small metallic gold printed brand text on the outer side of the right temple.","estimated_hex":"#C9A14A"}],"product":{"summary":"Glossy black round-frame sunglasses shown from a three-quarter front-right angle with grey tinted round lenses, slim temples, and small metallic rivet details.","observations":[{"key":"Frame shape","kind":"feature","value":"Full-rim round frame with a slightly raised bridge area and gently tapered rims; frame appears glossy and continuous around each lens.","regions":[{"x":0.08,"y":0.44,"width":0.84,"height":0.36,"confidence":"high"}],"evidence_status":"direct"},{"key":"Lens tint","kind":"feature","value":"Both lenses are medium-dark grey tinted and appear uniformly colored with subtle internal reflections.","regions":[{"x":0.18,"y":0.53,"width":0.28,"height":0.3,"confidence":"high"},{"x":0.44,"y":0.52,"width":0.3,"height":0.28,"confidence":"high"}],"evidence_status":"direct"},{"key":"Material finish","kind":"feature","value":"Frame and temples have a glossy polished finish that produces highlights along edges.","regions":[{"x":0.08,"y":0.44,"width":0.84,"height":0.36,"confidence":"high"}],"evidence_status":"direct"},{"key":"Rivet detail","kind":"feature","value":"Two small circular metallic rivets are visible on the front of each upper rim near the hinges.","regions":[{"x":0.14,"y":0.48,"width":0.06,"height":0.05,"confidence":"high"},{"x":0.4,"y":0.49,"width":0.06,"height":0.05,"confidence":"high"}],"evidence_status":"direct"},{"key":"Temple profile","kind":"feature","value":"Slim, straight temples that curve slightly downward toward the ear tips; right temple shown with outer-side branding.","regions":[{"x":0.36,"y":0.4,"width":0.56,"height":0.2,"confidence":"high"}],"evidence_status":"direct"},{"key":"Outer temple text","kind":"text","value":"MELLER","regions":[{"x":0.64,"y":0.54,"width":0.16,"height":0.06,"confidence":"high"}],"evidence_status":"direct"}]},"packaging":{"observations":[]},"schema_version":2,"coordinate_space":{"units":"normalized","origin":"top_left"}},"variant_ids":["4692438","4692439"]}],"price":"98 CAD","sale_price":"98 CAD","availability":"in_stock","listing_has_variations":"true","variants":[{"sku":"4692438","url":"https://www.simons.ca/en/men-accessories/sunglasses/round/kubu-round-sunglasses--23297-26202?colourId=1","image":{"id":"img-variant-4692438","url":"https://imagescdn.simons.ca/images/23297/26202/1/A1_2.jpg","alt_text":"Kubu round sunglasses - Black - ONE SIZE variant image","position":1,"variant_ids":["4692438"]},"price":{"value":98,"currency":"CAD"},"title":"Kubu Round Sunglasses - Black - One Size","option1":"Black","option2":"ONE SIZE","image_url":"https://imagescdn.simons.ca/images/23297/26202/1/A1_2.jpg","variant_id":"4692438","availability":"in_stock"},{"sku":"4692439","url":"https://www.simons.ca/en/men-accessories/sunglasses/round/kubu-round-sunglasses--23297-26202?colourId=30","image":{"id":"img-variant-4692439","url":"https://imagescdn.simons.ca/images/23297/26202/1/A1_2.jpg","alt_text":"Kubu round sunglasses - Green - ONE SIZE variant image","position":2,"variant_ids":["4692439"]},"price":{"value":98,"currency":"CAD"},"title":"Kubu Round Sunglasses - Green - One Size","option1":"Green","option2":"ONE SIZE","image_url":"https://imagescdn.simons.ca/images/23297/26202/30/A1_2.jpg","variant_id":"4692439","availability":"in_stock"}],"item_group_title":"Kubu Round Sunglasses","size_system":"US","gender":"male","is_digital":"false","q_and_a":[{"a":"The lens material is TAC (Tri Acetate Cellulose), not CR-39, polycarbonate, or glass [1].","q":"What is the exact lens material (CR-39, polycarbonate, or glass) used in these sunglasses?"},{"a":"Yes, the original lenses can be replaced with prescription lenses. The product description states 'The original lenses can be replaced with customised lenses of various types, with or without prescription' and the lenses are available with prescription for many colorways [1]. Meller's official FAQs confirm you can change the lenses at an optician [2].","q":"Are the lenses replaceable or can these frames accept prescription lenses?"},{"a":"The sunglasses weigh 130 g [1].","q":"What is the exact weight of the sunglasses?"},{"a":"The biosourced acetate is made from castor plant seeds and contains 45% bio-based materials [1]. The frame also uses Cellulose Propionate temples [2].","q":"Is the biosourced acetate made from a specific renewable source (e.g., castor oil) and what percentage is bio-based?"},{"a":"Yes, the lenses comply with both ANSI Z80.3:2008 and EN ISO 12312-1:2013, as stated in Meller's official FAQs [1].","q":"Do the lenses meet the ANSI Z80.3 or EN 12312-1 standards for UV protection and impact resistance?"}],"target_countries":"US","canonical_url":"https://www.simons.ca/en/men-accessories/sunglasses/round/kubu-round-sunglasses--23297-26202?colourId=0","deep_research":{"dimensions":{"bio_acetate_frame_care":{"title":"Caring for bio-acetate frames and lens coatings","entries":{"microfiber_vs_paper_abrasives":"The TAC polarized lenses' water-repellent and scratch-resistant coatings degrade quickly when rubbed with paper towels or shirt corners — the included microfiber cloth is engineered to lift oil and dust without leaving micro-scratches that scatter polarized light, making it the only recommended cleaning medium for maintaining glare-free vision.","dashboard_risk_vs_metal_frames":"Unlike titanium or stainless steel eyewear, acetate frames soften at temperatures achievable inside a car parked in sun — a single afternoon on a dashboard can permanently warp the 50 mm eye-width bridge, making the included rigid box the essential summer carry for this frame.","embedded_vs_coated_uv_protection":"Because TAC polarized lenses incorporate UV400 absorbers into the cellulosic matrix, the UV filtering is unaffected by cleaning, scratches, or coating wear — the water-repellent outer layer is the only element that requires careful handling to maintain its slick surface, not the sun safety of the eyes.","chemical_vulnerability_of_acetate":"Bio-acetate frames share standard acetate's susceptibility to alcohol, ammonia, and acetone, which cause surface crazing and dull the finish; hand sanitizer, perfume, and window cleaner should never touch the frame — only a mild dish soap solution and lukewarm water rinse should be used when the temple tips or bridge need more than a dry buff.","moisture_absorption_in_bio_acetate":"The biosourced acetate frame, derived 45% from castor plant seeds, remains hygroscopic — meaning it swells slightly with prolonged humidity or water exposure; drying the frame fully with the included cloth after rain or sweat immersion is the single most effective habit for preventing temple looseness and hinge stress over years of use."}},"frame_fit_for_round_style":{"title":"How the 50mm frame fits different face shapes","entries":{"142mm_temple_stability":"At 142mm, the temples fall right on the adult-standard mark, providing ample length to hook behind the ears securely; combined with the round lens shape’s lack of wrap, this standard length ensures the frame stays put without creating the squeezed-side pressure that shorter temples can exert during extended wear.","50mm_lens_width_overall_size":"A 50mm lens width classifies the Kubu in the medium size tier for round sunglasses — large enough to make the circular silhouette a deliberate style choice without being extreme, yet compact enough to suit faces from small-medium up to large, providing effective glare coverage across a broad demographic.","22mm_bridge_a_wide_fit_advantage":"Where most round acetate frames stick to narrower 18–20mm bridges, the Kubu’s 22mm bridge trades a pinch-prone keyhole for a more comfortable, weight-distributing fit across wider nose bridges — a design choice that specifically benefits wearers with broader nasal bones who often struggle with standard round frames sliding down.","round_on_angular_face_shape_synergy":"Round frames are the classic counterpoint to angular face shapes — the 50mm continuous curve of the Kubu effectively softens square jawlines and prominent cheekbones, making these sunglasses an easy entry into the round-frame trend for men with strong, boxy facial features seeking a balancing, retro-inflected look.","acetate_front_propionate_temple_balance":"The frame front’s biosourced acetate offers rigidity for optician adjustments, while the temples’ cellulose propionate is lighter — this cuts overall weight to 130 g (already modest for acetate) and shifts the balance point forward, so the glasses feel steady on the nose without the temple-heavy drag that can cause ear fatigue over hours."}},"uv_certification_standards":{"title":"What the ANSI and ISO UV certifications guarantee","entries":{"optical_clarity_thresholds":"The standards limit spherical power deviation to ±0.12 D, astigmatic power to ±0.12 D, and prismatic difference to ≤0.25 cm/m, ensuring the lenses don't distort vision or cause eye fatigue during extended wear — critical for anyone using them while driving or spending long hours outdoors.","uv_transmittance_verification":"Both standards independently validate the UV400 claim by requiring maximum transmittance of 1% or less across the UVB and UVA bands, ensuring the lenses block virtually 100% of harmful ultraviolet radiation rather than relying solely on a self-declared manufacturer label.","dual_international_certification":"Meeting both ANSI Z80.3 and EN ISO 12312-1 is uncommon in the sub-$100 price tier and signals that the product was engineered to satisfy two distinct regulatory frameworks, giving buyers confidence that performance and safety weren't compromised even though these aren't premium-priced glasses.","drop_ball_impact_test_ansi_z80_3_2008":"The ANSI certification requires lenses to survive a 5/8-inch steel ball dropped from 50 inches without shattering, providing a baseline of impact protection that separates these from uncertified fashion sunglasses and adds a meaningful layer of safety for daily wear.","frame_heat_resistance_en_iso_12312_1_2013":"The European standard subjects frames to temperatures up to 55°C for 16 hours and tests resistance to sweat and optical radiation, so the biosourced acetate frame has been validated to withstand high heat exposure — reassuring for leaving the sunglasses in a hot car without deformation."}}}},"handle":"kubu-round-sunglasses-23297-26202","storefront_path":"/en/men-accessories/sunglasses/round/kubu-round-sunglasses--23297-26202","storefront_url":"https://ai.simons.ca/en/men-accessories/sunglasses/round/kubu-round-sunglasses--23297-26202"}}