{"product":{"catalog_id":"c0588454-0e08-4a0e-b0b0-7137a8a70482","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"f8aa6afb-2425-4119-a56f-81a3016d239e","title":"Second Skin Ribbed Running Short Length: 8.25\" (21 Cm)","description":"These i.FiV5 by Simons Second Skin Ribbed Running Shorts are form-fitting athletic shorts designed for running and training. They feature a stretch nylon-blend microfibre jersey with ribbed texture, Polygiene odour-control technology, a built-in micro-perforated underpant, and an elastic waist with inner drawstring. 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compression-lined segment; the $39.95 CAD sale price collapses that premium into the range of basic $25–$40 gym shorts, making the technical value per dollar unusually high for a non-excess inventory clear.","built_in_micro_perforated_underpant_vs_mesh_brief_liners":"Where most running shorts at this price rely on a simple internal mesh brief (like the Under Armour Launch's 'Internal mesh liner'), I.FIV5 sews in a full micro-perforated underpant that provides chafe-resistant support across the entire 8.25″ inseam, effectively giving you a compression-style liner without the $70+ premium typical of 2-in-1 designs."},"entry_quotes":{"hidden_zip_pocket_behind":[{"url":"https://www.irunfar.com/best-running-shorts-for-men","quote":"while the fifth rear zipper pocket can fit some phones"}],"polygiene_anti_odor_technology":[{"url":"https://www.sitkagear.com/products/riser-active-short-8-inch/coyote","quote":"It's finished with Polygiene® Odor Control Technology that neutralizes odor, making 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laundering.","textured_depth_and_hand_feel":"The ribbed construction gives the nylon-blend jersey a tactile, substantial feel that belies its light weight — the alternating ridges add visual depth and a soft, almost velour-like hand, making the short feel more premium and more like a second skin than a paper-thin running liner.","ribbed_knit_stretch_and_recovery":"The ribbed knit delivers substantial width-wise stretch with exceptional snap-back recovery, while its minimal vertical stretch prevents the short from riding up — the fabric expands laterally with each stride then instantly returns to shape without sagging, keeping the short anchored at the waist and hem for a secure, non-slip fit that earns the 'second skin' label."},"entry_quotes":{"non_curling_edge_stability":[{"url":"https://oursocialfabric.ca/blogs/news/guide-to-rib-knit-fabric","quote":"Unlike a jersey, when pulled, the edges of rib knit do not 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direction."}]},"entry_sources":{"non_curling_edge_stability":["https://oursocialfabric.ca/blogs/news/guide-to-rib-knit-fabric","https://suertefabric.com/rib-knit-fabric-the-reversible-textile-with-excellent-stretch/"],"textured_depth_and_hand_feel":["https://oursocialfabric.ca/blogs/news/guide-to-rib-knit-fabric"],"ribbed_knit_stretch_and_recovery":["https://www.seamwork.com/fabric-guides/a-guide-to-rib-knit-fabrics","https://oursocialfabric.ca/blogs/news/guide-to-rib-knit-fabric"]}},"inseam_length_8_inch":{"title":"8.25-inch inseam: coverage and mobility trade-offs","entries":{"inner_thigh_chafing_barrier":"Running-guidance from ASICS pinpoints longer shorts as a primary defense against inner-thigh chafing because the fabric physically separates skin surfaces during the stride — at 8.25 inches, this short extends well past the typical friction zone, adding a mechanical layer of protection that a standard 5-inch split short lacks.","above_the_7_inch_protector_length":"At 8.25 inches, these shorts extend beyond the 7-inch inseam that running guides associate with trail protection and taller frames, delivering the extra coverage needed to shield thighs from brush and friction without tipping into the 9-inch 'traditional gym short' territory."},"entry_quotes":{"inner_thigh_chafing_barrier":[{"url":"https://www.asics.com/gb/en-gb/running-advice/how-to-stop-chafing-when-running/","quote":"If you suffer from inner thigh chafing, then one of the simplest solutions is to wear longer running shorts."}],"above_the_7_inch_protector_length":[{"url":"https://eathealthy365.com/finding-your-ideal-mens-running-short-inseam/","quote":"The 7-inch inseam offers a noticeable increase in coverage, hitting around the mid-thigh on most men."}]},"entry_sources":{"inner_thigh_chafing_barrier":["https://www.asics.com/gb/en-gb/running-advice/how-to-stop-chafing-when-running/"],"above_the_7_inch_protector_length":["https://eathealthy365.com/finding-your-ideal-mens-running-short-inseam/","https://thehigh5tribe.com/running/running-shorts/"]}},"polygiene_technology":{"title":"How Polygiene odor control works","entries":{"not_nano_silver":"Polygiene is explicitly a non-nano silver treatment, so there is no risk of nanoparticle shedding during wear or laundering, while it still provides a full antimicrobial surface effect.","skin_microbiome_safe":"Polygiene has a healthcare background and has passed extensive dermal sensitivity testing; it operates only at the fabric surface and does not leach onto skin or disrupt the body’s natural bacterial balance, making it gentle enough for the close-contact liner of a running short.","recycled_silver_origin":"The active silver chloride in Polygiene is produced from recycled silver, so the odor-control chemistry is a second life use of existing material rather than a newly mined resource.","oligodynamic_silver_ion_action":"Through the oligodynamic effect, Polygiene silver ions bind to bacterial cell membrane proteins and DNA at concentrations as low as 0.01 mg/L, actively suppressing odor-causing bacteria rather than simply masking their smell — a real antimicrobial mechanism that stays active long after application.","bluesign_and_oeko_tex_certified":"Polygiene holds both bluesign approval and Oeko-Tex Eco-Passport certification, which means every aspect of its production — from chemical formulation to factory application — meets rigorous limits on harmful substances and environmental impact, a distinction that few sportswear odor control treatments carry.","permanent_fabric_integrated_silver_chloride":"Polygiene is a silver chloride salt treatment applied during the textile finishing stage and integrated directly into the fibers, making the antimicrobial effect a permanent characteristic of the shorts that will not degrade or wash out over the garment’s lifetime."},"entry_quotes":{"not_nano_silver":[{"url":"https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf","quote":"Polygiene is not nano silver."}],"skin_microbiome_safe":[{"url":"https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf","quote":"Polygiene is active only on the material’s surface and does not interfere with bacteria naturally found on the skin, even when used for long periods of time"}],"recycled_silver_origin":[{"url":"https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf","quote":"Polygiene is based on silver salt (silver chloride) produced from recycled silver."}],"oligodynamic_silver_ion_action":[{"url":"https://gamsolutions.com/how-it-works/","quote":"Silver ions released from Polygiene actively kill microbes long after application and does not evaporate like typical antibacterial products."},{"url":"https://gamsolutions.com/how-it-works/","quote":"the metabolism of bacteria is adversely affected by silver ions at concentrations of 0.01–0.1 mg/L."}],"bluesign_and_oeko_tex_certified":[{"url":"https://polygiene.com/stayfresh/","quote":"We’re accredited by bluesign, which promotes consumer safety, low impact manufacturing and responsible use of resources; Oeko-Tex Eco-Passport which supports responsible manufacturing and supply chains; and we have REACH compliance"}],"permanent_fabric_integrated_silver_chloride":[{"url":"https://polygiene.com/stayfresh/","quote":"integrated into the fabric, so freshness is built-in for the lifetime of the garment"},{"url":"https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf","quote":"The treatment is permanent and effective for the lifetime of the product."}]},"entry_sources":{"not_nano_silver":["https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf"],"skin_microbiome_safe":["https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf"],"recycled_silver_origin":["https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf"],"oligodynamic_silver_ion_action":["https://gamsolutions.com/how-it-works/"],"bluesign_and_oeko_tex_certified":["https://polygiene.com/stayfresh/"],"permanent_fabric_integrated_silver_chloride":["https://polygiene.com/stayfresh/","https://gamsolutions.com/wp-content/uploads/2020/02/polygiene-fact-sheet.pdf"]}},"micro_perforated_liner":{"title":"Benefits of a micro-perforated inner brief","entries":{"polygiene_x_perforation_synergy":"The micro-perforated underpant ventilates the groin area, carrying away sweat vapor that would otherwise create a humid breeding ground for bacteria, while the permanent Polygiene® treatment inhibits the growth of any remaining odor-causing microbes — together providing a freshness window that stretches across multiple workouts before a wash is required."}},"nylon_fabric_performance":{"title":"Nylon blend performance versus standard polyester","entries":{"long_term_shape_retention":"Laboratory stretch-cycle testing shows an 80/20 nylon/spandex blend retains its shape with under 2% permanent deformation after 100 cycles, while a 92/8 polyester/spandex blend hits 4–6% and pure polyester reaches 10–12% — so the short's nylon-rich blend keeps its compressive, supportive fit through months of washes and high-intensity movement without sagging.","abrasion_resistance_and_durability":"Martindale abrasion testing places nylon at 25,000–80,000+ cycles versus polyester's 15,000–20,000 cycles, meaning the fabric resists pilling and wear-through from pack straps, trail brush, and repeated friction far better — for a runner who logs miles on mixed terrain or carries a hydration vest, this durability extends the short's useful life noticeably.","silky_handfeel_and_premium_tactility":"Nylon fibers naturally present a smoother, glossier, and silkier surface than the drier, sometimes plastic-like feel of polyester, giving the short a more luxurious drape and a cool-to-the-touch sensation that distinguishes it from typical budget running shorts.","raw_material_cost_and_value_positioning":"Raw nylon commands a 20–30% price premium over polyester, so its presence in a stylistically minded $79 short (regular price) indicates the brand is spending on material comfort and longevity rather than hitting the lowest possible price — a signal to the runner that the garment was built to feel good and last, not just to sell at a discount.","active_moisture_absorption_and_contact_cooling":"Nylon's standard moisture regain of 4–4.5% versus polyester's 0.4% means it actively pulls sweat into the fiber, and nylon's high thermal conductivity rapidly draws heat away from the skin, creating a contact-cooling sensation — for warm-weather runs, this makes the short feel cooler at the start and less clammy than a pure polyester short until sweat volume overwhelms the fiber's capacity."},"entry_quotes":{"long_term_shape_retention":[{"url":"https://yunenx.com/sportswear-fabric-guide/","quote":"80% Nylon/20% Spandex | <2% | Best shape retention | Yoga, compression"},{"url":"https://yunenx.com/sportswear-fabric-guide/","quote":"92% Poly/8% Spandex | 4–6% | Slight loosening, acceptable | Basic tees"}],"abrasion_resistance_and_durability":[{"url":"https://seller.alibaba.com/blogs/2026/southeast-asia/textiles/polyester-vs-nylon-fabric-buying-guide-alibaba-b2b","quote":"15,000-20,000 cycles"},{"url":"https://seller.alibaba.com/blogs/2026/southeast-asia/textiles/polyester-vs-nylon-fabric-buying-guide-alibaba-b2b","quote":"25,000-80,000+ cycles [2]"}],"silky_handfeel_and_premium_tactility":[{"url":"https://fabric-supplier.com/nylon-vs-polyester/","quote":"Smooth, silky, cool, sometimes “oily”"},{"url":"https://fabric-supplier.com/nylon-vs-polyester/","quote":"Dry, crisp, sometimes “plastic” or cotton-like"}],"raw_material_cost_and_value_positioning":[{"url":"https://seller.alibaba.com/blogs/2026/southeast-asia/textiles/polyester-vs-nylon-fabric-buying-guide-alibaba-b2b","quote":"Nylon costs 20-30% more than polyester but offers 30-50% better abrasion resistance [1]"}],"active_moisture_absorption_and_contact_cooling":[{"url":"https://www.anrudatextile.com/news/why-sportswear-fabric-sourcing-needs-clear-moisture-management-logic-nylon-vs-polyester/","quote":"Nylon's standard moisture regain is around 4% to 4.5%, giving it excellent hydrophilic properties."},{"url":"https://www.anrudatextile.com/news/why-sportswear-fabric-sourcing-needs-clear-moisture-management-logic-nylon-vs-polyester/","quote":"Polyester's standard moisture regain is only about 0.4%, making it naturally extremely hydrophobic."},{"url":"https://www.anrudatextile.com/news/why-sportswear-fabric-sourcing-needs-clear-moisture-management-logic-nylon-vs-polyester/","quote":"Nylon has excellent thermal conductivity. While absorbing sweat, it can rapidly draw heat away from the body surface, possessing a natural contact cooling effect."}]},"entry_sources":{"long_term_shape_retention":["https://yunenx.com/sportswear-fabric-guide/"],"abrasion_resistance_and_durability":["https://seller.alibaba.com/blogs/2026/southeast-asia/textiles/polyester-vs-nylon-fabric-buying-guide-alibaba-b2b"],"silky_handfeel_and_premium_tactility":["https://fabric-supplier.com/nylon-vs-polyester/"],"raw_material_cost_and_value_positioning":["https://seller.alibaba.com/blogs/2026/southeast-asia/textiles/polyester-vs-nylon-fabric-buying-guide-alibaba-b2b"],"active_moisture_absorption_and_contact_cooling":["https://www.anrudatextile.com/news/why-sportswear-fabric-sourcing-needs-clear-moisture-management-logic-nylon-vs-polyester/"]}}}},"handle":"second-skin-ribbed-running-short-length-8-25-21-cm-15903-225042","storefront_path":"/en/men-sports-clothes/running/second-skin-ribbed-running-short-length-8-25-21-cm--15903-225042","storefront_url":"https://ai.simons.ca/en/men-sports-clothes/running/second-skin-ribbed-running-short-length-8-25-21-cm--15903-225042"}}