{"product":{"catalog_id":"0e20cce7-3581-4e23-886d-4f7de688f1be","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"15ce3f04-3be8-4506-8364-339b9a020b75","title":"5\" Number 1 Dad Boxer Brief Polyester","description":"Men's 5-inch inseam boxer briefs from Undz, a Canadian brand, made from stretch, ultra-light Maxvent microfibre polyester. They are designed for everyday wear, wicking moisture and drying quickly, with an elastic waistband and a double-layered front panel. The briefs feature a bold red 'Number 1 Dad' foam-finger graphic printed on both the front pouch and rear seat.","url":"https://www.simons.ca/en/men-underwear/boxers-briefs/boxer-briefs/5-number-1-dad-boxer-brief-polyester--12556-26109?colourId=0","brand":"Undz","condition":"new","product_category":"men underwear > boxers briefs > boxer briefs","material":"95% Maxvent polyester, 5% spandex","age_group":"adult","image_url":"https://imagescdn.simons.ca/images/12556/26109/40/A1_2.jpg","additional_image_urls":["https://imagescdn.simons.ca/images/12556/26109/40/A2_2.jpg"],"images":[{"id":"img-1784702961021-0","url":"https://imagescdn.simons.ca/images/12556/26109/40/A1_2.jpg","alt_text":"5\" number 1 dad boxer brief Polyester product image (primary)","position":1,"attributes":{"other":{"summary":"Studio product shot cropped at the model's mid-torso and upper thighs against a neutral light gray background with soft even lighting and subtle shadows.","observations":[{"key":"Shot composition","kind":"feature","value":"Cropped view showing model from just below the chest to mid-thigh, centered horizontally.","regions":[{"x":0,"y":0,"width":1,"height":1,"confidence":"high"}],"evidence_status":"direct"},{"key":"Background","kind":"feature","value":"Neutral light gray background with even tone and no visible props.","regions":[{"x":0,"y":0,"width":1,"height":0.45,"confidence":"high"}],"evidence_status":"direct"},{"key":"Lighting and shadow","kind":"feature","value":"Soft studio lighting creating gentle shadows under the waistband and inner thigh areas, with highlight on the model's torso.","regions":[],"evidence_status":"direct"},{"key":"Model presence","kind":"feature","value":"Male model wearing the product with both arms visible; no hands interacting with the garment except relaxed at sides.","regions":[{"x":0,"y":0.1,"width":1,"height":0.9,"confidence":"high"}],"evidence_status":"direct"}]},"colors":[{"name":"bright blue","part":"main fabric","regions":[{"x":0.18,"y":0.48,"width":0.64,"height":0.38,"confidence":"high"}],"subject":"product","description":"Bright solid blue with a subtle tonal swirl texture, smooth knit finish.","sampled_hex":"#238CE2","estimated_hex":"#1E8FED"},{"name":"black","part":"waistband","regions":[{"x":0.2,"y":0.36,"width":0.6,"height":0.06,"confidence":"high"}],"subject":"product","description":"Matte black elastic band encircling the waist.","sampled_hex":"#311C15","estimated_hex":"#111111"},{"name":"medium cyan blue","part":"waistband label","regions":[{"x":0.46,"y":0.36,"width":0.07,"height":0.06,"confidence":"high"}],"subject":"product","description":"Small rectangular blue label centered on the waistband with white text.","estimated_hex":"#2AB0F2"},{"name":"vivid red","part":"front graphic","regions":[{"x":0.52,"y":0.52,"width":0.18,"height":0.33,"confidence":"high"}],"subject":"product","description":"Solid red printed foam-finger graphic with smooth finish, overlaid with thin yellow drawn lines.","sampled_hex":"#DB0413","estimated_hex":"#E3262A"},{"name":"bright yellow","part":"front graphic outline","regions":[{"x":0.54,"y":0.54,"width":0.14,"height":0.24,"confidence":"high"}],"subject":"product","description":"Thin bright yellow outline and detail lines printed on top of the red graphic.","estimated_hex":"#FFD200"}],"product":{"summary":"Front view of a pair of bright blue boxer briefs worn by a model showing a black elastic waistband with a centered blue label reading 'UNDZ' and a large red foam-finger graphic printed over the front pouch; 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leg hems have a stitched folded finish.","regions":[{"x":0.4,"y":0.5,"width":0.34,"height":0.42,"confidence":"high"}],"evidence_status":"direct"},{"key":"Fabric appearance","kind":"feature","value":"Smooth, slightly shiny stretch knit appearance consistent across the garment surface.","regions":[],"evidence_status":"direct"}]},"packaging":{"observations":[]},"schema_version":2,"coordinate_space":{"units":"normalized","origin":"top_left"}},"variant_ids":["4636849","4636850","4636851","4636852"]},{"id":"img-1784702961021-1","url":"https://imagescdn.simons.ca/images/12556/26109/40/A2_2.jpg","alt_text":"5\" number 1 dad boxer brief Polyester product image 2","position":2,"attributes":{"other":{"summary":"Studio product shot cropped at model shoulders and mid-thighs against a neutral light-gray background with soft even lighting and minimal shadows.","observations":[{"key":"Background and lighting","kind":"feature","value":"Even, soft studio lighting on a plain light-gray background producing mild diffuse shadows along the model's sides.","regions":[],"evidence_status":"direct"},{"key":"Crop and composition","kind":"feature","value":"Image cropped to show the model from just below the shoulders to mid-thigh; hands and arms appear at the outer edges and are partially visible.","regions":[{"x":0,"y":0,"width":1,"height":1,"confidence":"low"}],"evidence_status":"direct"},{"key":"Image quality","kind":"feature","value":"High-resolution photograph with clear, sharp detail on fabric texture and printed graphic.","regions":[],"evidence_status":"direct"}]},"colors":[{"name":"bright sky blue","part":"main fabric","regions":[{"x":0.15,"y":0.38,"width":0.7,"height":0.47,"confidence":"high"}],"subject":"product","description":"Medium-bright blue fabric with a subtle swirl pattern, matte knit finish.","sampled_hex":"#3B9CEB","estimated_hex":"#2E9BFF"},{"name":"black","part":"waistband","regions":[{"x":0.18,"y":0.33,"width":0.64,"height":0.05,"confidence":"high"}],"subject":"product","description":"Solid black elastic band with matte finish.","estimated_hex":"#000000"},{"name":"vivid red","part":"seat graphic","regions":[{"x":0.42,"y":0.45,"width":0.16,"height":0.33,"confidence":"high"}],"subject":"product","description":"Solid red printed foam-finger graphic with a thin yellow outline and yellow internal line accents.","sampled_hex":"#DB0413","estimated_hex":"#D32F2F"},{"name":"bright yellow","part":"graphic outline and details","regions":[{"x":0.44,"y":0.48,"width":0.1,"height":0.22,"confidence":"high"}],"subject":"product","description":"Bright yellow linework used for the outline and finger detail on the red graphic.","estimated_hex":"#FFD100"}],"product":{"summary":"Rear view of a male model wearing mid-thigh boxer briefs with a centered large red foam-finger graphic on the seat; 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Screen printing on polyester, when done with quality inks and proper curing, holds up well through multiple washes—especially if you wash inside out in cold water and avoid bleach.","q":"How is the 'Number 1 Dad' graphic applied? Is it screen-printed or a heat transfer, and will it last through multiple washes?"},{"a":"Maxvent microfibre has a smooth, soft-to-the-touch feel that's lighter and more breathable than cotton, with a slicker surface that helps with moisture-wicking and quick drying rather than the absorbent, natural texture of cotton.","q":"How does the Maxvent microfibre fabric feel against the skin compared to cotton? Is it soft or more like a slick synthetic?"},{"a":"The elastic waistband should stay in place during wear when the correct size is chosen, as the stretchy Maxvent microfibre and elastic waistband combination provides a secure fit without rolling.","q":"Does the elastic waistband tend to roll down or stay in place during wear?"}],"target_countries":"US","canonical_url":"https://www.simons.ca/en/men-underwear/boxers-briefs/boxer-briefs/5-number-1-dad-boxer-brief-polyester--12556-26109?colourId=0","deep_research":{"dimensions":{"dad_themed_gift_appeal":{"title":"The 'Number 1 Dad' design as a novelty gift","entries":{"number_1_dad_phrase":"Unlike novelty gag underwear built around a fleeting joke, the 'Number 1 Dad' slogan taps a culturally entrenched expression of paternal appreciation that reads as a sincere, ego-boosting compliment, elevating the boxer briefs from a one-laugh gift into a wearable daily affirmation that fits naturally into Father's Day and birthday gifting traditions.","undz_canadian_brand":"Undz is a Canadian brand sold through the Quebec-based Simons department store under its Le 31 label, so for domestic gift-givers the product carries a local-design story that sets it apart from generic, print-on-demand dad underwear flooding online marketplaces—a meaningful differentiator amid rising interest in supporting Canadian brands.","9_99_cad_sale_price_point":"Priced at $9.99 CAD (a 53% markdown from the $20 regular price), the boxer briefs land in the impulse-gift and stocking-stuffer range, which lowers the barrier for someone buying a lighthearted Father's Day or holiday gag-gift without risking serious money on a novelty item.","maxvent_microfibre_functionality":"The Maxvent microfibre is moisture-wicking and quick-drying, so the recipient gets a functional athletic-style boxer brief that is genuinely practical for summer or active days—meaning the garment is likely to earn repeated wear rather than being laughed at once and forgotten in the back of a drawer.","department_store_curation_via_simons":"Being sold through Simons, a full-line Canadian department store, places the product in a curated retail environment rather than a third-party marketplace, subconsciously signaling to gift shoppers that the item meets a certain quality threshold and arrives in presentable, gift-ready packaging.","5_inch_inseam_and_double_layered_front":"The 5-inch inseam and double-layered front construction provide a modern, supportive silhouette that sits securely under pants—a design cue reassuring gift-buyers that these aren't flimsy novelty shorts but proper boxer briefs built for daily wear."}},"wash_durability_and_shape":{"title":"Long-term durability and shape retention after washes","entries":{"cold_wash_stability":"Polyester's sub-1% moisture regain means the fabric will not absorb water and swell or shrink in a cold wash, so shape is preserved through normal laundering cycles as long as the dryer stays below 80°C."},"entry_quotes":{"cold_wash_stability":[{"url":"https://www.sixdragonfabrics.com/info/does-polyester-shrink-wrinkle-or-pill-the-tru-103560401.html","quote":"Under standard cold-wash laundering, raw polyester fibers exhibit a moisture regain of less than 1%."},{"url":"https://www.sixdragonfabrics.com/info/does-polyester-shrink-wrinkle-or-pill-the-tru-103560401.html","quote":"When stretch activewear is subjected to intensive drying modes exceeding 80°C, combined with brutal mechanical drum tumbling, the internal stress locked within the synthetic fibers is released a second time. This triggers aggressive thermal contraction, deforming the garment pattern."}]},"entry_sources":{"cold_wash_stability":["https://www.sixdragonfabrics.com/info/does-polyester-shrink-wrinkle-or-pill-the-tru-103560401.html"]}},"double_layer_front_support":{"title":"Purpose and comfort of the double-layered front","entries":{"reinforced_front_panel":"The double layer reinforces a high-wear zone where inner thighs and outer garments create constant friction, prolonging the brief's lifespan by protecting the print and preventing premature thinning of the thin, stretchy fabric.","opacity_for_novelty_print":"Ultra-light Maxvent microfibre can become translucent when stretched in high-tension areas, so the double-layer front acts as a built-in modesty panel that keeps the 'Number 1 Dad' graphic opaque and readable, preventing the design from muddying or revealing what's underneath."}},"maxvent_moisture_management":{"title":"How the Maxvent fabric manages moisture all day","entries":{"odor_retention_trade_off":"Polyester’s oleophilic nature means it absorbs body oils that trap odor-causing bacteria; while Maxvent effectively moves moisture, that same polyester base is more prone to holding onto smells over time than nylon or wool underwear, making it less ideal for multi-day wear without washing."},"entry_quotes":{"odor_retention_trade_off":[{"url":"https://www.outdoorgearlab.com/reviews/clothing-mens/travel-underwear/stance-poly-blend","quote":"However, polyester, unlike nylon, is oleophilic and will hold on to skin oils, where some body odor comes from. This is why polyester clothing can retain the stink of your last trip even after repeated washings."}]},"entry_sources":{"odor_retention_trade_off":["https://www.outdoorgearlab.com/reviews/clothing-mens/travel-underwear/stance-poly-blend"]}}}},"handle":"5-number-1-dad-boxer-brief-polyester-12556-26109","storefront_path":"/en/men-underwear/boxers-briefs/boxer-briefs/5-number-1-dad-boxer-brief-polyester--12556-26109","storefront_url":"https://ai.simons.ca/en/men-underwear/boxers-briefs/boxer-briefs/5-number-1-dad-boxer-brief-polyester--12556-26109"}}