{"product":{"catalog_id":"5aeedd77-9fb2-4a5a-bbaa-d98e7da625ba","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"5896f3f4-ebbb-4f09-a998-79d47640a1ce","title":"Micro-Perforated Muscle T-Shirt","description":"This product is a sleeveless muscle T-shirt (tank top) from the i.FiV5 by Simons line, featuring a crew neck and a micro-perforated fabric texture. It is constructed from a soft, stretch microfibre jersey made from a moisture-wicking recycled polyester blend, with Polygiene technology to eliminate odor and prevent bacteria growth. The shirt uses flat seams for comfort and includes i.FiV5 logo and reflective details, suitable for athletic and casual wear.","url":"https://www.simons.ca/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/micro-perforated-muscle-t-shirt--16362-229897?colourId=10","brand":"I.FIV5","condition":"new","product_category":"men sports clothes > t shirts tank tops > tank tops","material":"90% polyester made from recycled plastic bottles, 10% spandex","age_group":"adult","image_url":"https://imagescdn.simons.ca/images/16362/229897/10/A1_2.jpg","additional_image_urls":["https://imagescdn.simons.ca/images/16362/229897/10/A2_2.jpg","https://imagescdn.simons.ca/images/16362/229897/10/A3_2.jpg"],"images":[{"id":"img-1784702886561-0","url":"https://imagescdn.simons.ca/images/16362/229897/10/A1_2.jpg","alt_text":"Micro-perforated muscle T-shirt product image (primary)","position":1,"attributes":{"other":{"summary":"Studio front-facing product shot on a light neutral background showing a model 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The soft, stretch microfibre jersey fabric keeps the perforations from opening enough to show skin, even when stretched.","q":"Do the micro-perforations make the shirt see-through or show skin when stretched?"}],"target_countries":"US","canonical_url":"https://www.simons.ca/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/micro-perforated-muscle-t-shirt--16362-229897?colourId=10","deep_research":{"dimensions":{"flat_seams_and_comfort":{"title":"Flat seam construction and chafe reduction","entries":{"edge_to_edge_butt_joint":"Flat seams are constructed by butting fabric edges together without a seam allowance, so the inside of the tank sits completely flush against the skin — during overhead presses or running, there is no raised ridge to rub against the chest or arms.","3x_stretch_cycle_endurance":"Because a flatlock seam distributes load across six independent threads, it withstands over three times as many stretch-and-recovery cycles as a standard coverstitched seam — so the tank’s seams remain intact far longer through repeated gym sessions and machine washes.","iso_607_interlocking_matrix":"Flatlock seams in performance activewear are classified as ISO 4915 type 607, a 4-needle 6-thread configuration whose interlocking thread matrix maintains over 90% of the base fabric’s elasticity; for this tank, that means the seams stretch with the microfibre rather than pulling against it.","chain_stitch_stretch_beyond_80":"The chain-stitch architecture of a flatlock seam gives it over 80% stretch capacity while resisting the permanent wavy distortion known as 'baconing,' so even after stretching the tank across broad shoulders repeatedly, the seams recover their shape without puckering.","parallel_stitch_visual_signature":"Flatlock construction produces characteristic parallel stitch rows on the tank’s exterior that double as a design accent, signaling technical craftsmanship to anyone who recognizes the visual language of performance activewear.","armhole_and_side_panel_chafe_protection":"Placing flat seams at the armholes and side body targets the highest-movement areas of a workout tank, following the activewear construction rule that any skin-contact seam on a high-friction zone must be flat to avoid irritation — here it keeps the tank comfortable through hundreds of arm swings and torso rotations.","burst_strength_fabric_before_seam_failure":"Under burst strength testing, the base fabric typically tears before the flatlock seam gives way, meaning the perforated microfibre is the weaker link — the seams reinforce the garment rather than providing a point of blowout."},"entry_quotes":{"edge_to_edge_butt_joint":[{"url":"https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/","quote":"Flatlock stitching is a seam construction method where two fabric panels are joined edge-to-edge (butt-jointed) rather than overlapped."},{"url":"https://www.leelinewear.com/overlock-vs-flatlock/","quote":"Flatlock interlocks the fabric edges completely flat, producing a smooth, low-profile seam on both sides. This dramatically reduces chafing — critical for long runs, high-intensity training, and direct skin-contact garments."}],"3x_stretch_cycle_endurance":[{"url":"https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/","quote":"In controlled tensile testing, 4-needle 6-thread flatlock seams withstand more than three times the number of stretch-and-recovery cycles before failure compared to standard coverstitched seams."}],"iso_607_interlocking_matrix":[{"url":"https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/","quote":"The flatlock stitch used in premium activewear manufacturing is formally classified as stitch type 607 under the ISO 4915 international stitch classification standard."},{"url":"https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/","quote":"The interlocking thread matrix maintains more than 90% of the base fabric’s elasticity under dynamic load"}],"chain_stitch_stretch_beyond_80":[{"url":"https://ugawear.com/why-the-4-needle-6-thread-flat-seam-is-the-standard-for-premium-activewear/","quote":"The chain-stitch structure provides remarkable elasticity, with a stretch capacity exceeding 80%."},{"url":"https://ugawear.com/why-the-4-needle-6-thread-flat-seam-is-the-standard-for-premium-activewear/","quote":"The seam's strong recovery properties also prevent the “baconing” effect, which is the wavy, stretched appearance that can compromise a garment's fit over time."}],"parallel_stitch_visual_signature":[{"url":"https://www.mughalapparel.com/blog/flatlock-vs-overlock-seams-activewear/","quote":"Many activewear brands intentionally use contrast-color thread for their flatlock seams."},{"url":"https://everydaybaselayer.com/the-purpose-of-flatlock-seaming/","quote":"Visible stitching can serve as a design element, while also minimizing pressure points, chafing, and indented lines for prolonged wear."}],"armhole_and_side_panel_chafe_protection":[{"url":"https://sansansports.com/overlock-vs-flatlock-the-right-stitch-for-each-zone/","quote":"Flatlock seams are designed to lie flat against the skin. They reduce bulk and prevent chafing, making them perfect for high-movement areas like underarms, side panels, and knees."},{"url":"https://www.mughalapparel.com/blog/flatlock-vs-overlock-seams-activewear/","quote":"Any seam that will directly contact skin during high-movement activity"}],"burst_strength_fabric_before_seam_failure":[{"url":"https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/","quote":"In burst strength tests, the base fabric typically fails before the seam does."}]},"entry_sources":{"edge_to_edge_butt_joint":["https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/","https://www.leelinewear.com/overlock-vs-flatlock/"],"3x_stretch_cycle_endurance":["https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/"],"iso_607_interlocking_matrix":["https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/"],"chain_stitch_stretch_beyond_80":["https://ugawear.com/why-the-4-needle-6-thread-flat-seam-is-the-standard-for-premium-activewear/"],"parallel_stitch_visual_signature":["https://www.mughalapparel.com/blog/flatlock-vs-overlock-seams-activewear/","https://everydaybaselayer.com/the-purpose-of-flatlock-seaming/"],"armhole_and_side_panel_chafe_protection":["https://sansansports.com/overlock-vs-flatlock-the-right-stitch-for-each-zone/","https://www.mughalapparel.com/blog/flatlock-vs-overlock-seams-activewear/"],"burst_strength_fabric_before_seam_failure":["https://tontonsportswear.com.au/why-flatlock-stitching-defines-activewear/"]}},"polygiene_odor_control":{"title":"Polygiene odor control technology","entries":{"elite_outdoor_brand_adoption":"Polygiene StayFresh is used by technical outdoor brands including The North Face and Montane, signaling that the odor-control technology is field-proven in high-output, multi-day conditions — not just a marketing label on a gym shirt.","permanent_fabric_integration":"Polygiene StayFresh is embedded into the fabric at the finishing stage rather than applied as a surface coating, so the odor-control performance persists for the usable life of the tank — this is not a chemical finish that fades after a dozen wash cycles, making it practical for frequent gym use and travel.","skin_safe_and_microbiome_friendly":"Extensive sensitivity testing confirms Polygiene is non-irritating even with prolonged wear and is only active within the textile, so it won’t interfere with the natural bacteria on your skin — a distinction that matters for anyone wearing it during marathon gym sessions or who has sensitive skin.","silver_chloride_antimicrobial_mechanism":"The treatment uses silver chloride, a naturally occurring salt, whose silver ions make it impossible for odor-causing bacteria to multiply — instead of masking smells, it stops them at the source, which is why the tank stays fresh even after high-intensity sweat sessions.","independent_lca_water_and_energy_savings":"An independent Life Cycle Assessment on a Polygiene StayFresh-treated t-shirt found that skipping just every other wash saves 3,800 liters of water and 51 kWh of energy per year — so wearing this tank multiple times between washes directly cuts your resource footprint.","bluesign_oeko_tex_eco_passport_reach_certifications":"Polygiene StayFresh holds bluesign and Oeko-Tex Eco-Passport accreditations plus REACH compliance, which means the treatment meets rigorous consumer safety and environmental standards — a level of third-party scrutiny that generic 'antimicrobial' finishes often lack."},"entry_quotes":{"elite_outdoor_brand_adoption":[{"url":"https://polygiene.com/stayfresh/","quote":"The North Face Perfect freshness with Polygiene StayFresh"},{"url":"https://polygiene.com/stayfresh/","quote":"Montane Products enhanced with Polygiene StayFresh technology"}],"permanent_fabric_integration":[{"url":"https://polygiene.com/stayfresh/","quote":"Polygiene StayFresh technology is embedded in textiles to provide freshness for the entire lifespan of most products."}],"skin_safe_and_microbiome_friendly":[{"url":"https://polygiene.com/stayfresh/","quote":"All our treatments have undergone extensive sensitivity testing and are completely safe – even when used for long periods. Polygiene® StayFresh is only active in the material so it doesn’t interfere with any natural bacteria on the skin."}],"silver_chloride_antimicrobial_mechanism":[{"url":"https://polygiene.com/stayfresh/","quote":"The silver ions in the salt make it impossible for the bacteria responsible for bad smells to multiply, stopping odor in its tracks"}],"independent_lca_water_and_energy_savings":[{"url":"https://polygiene.com/odor-control-solutions/","quote":"A recent independent Life Cycle Assessment (LCA) on a Polygiene StayFresh-treated t-shirt showed that skipping every other wash saves 51 kWh of energy and 3,800 liters of water a year."}],"bluesign_oeko_tex_eco_passport_reach_certifications":[{"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, the EU’s chemicals legislation."}]},"entry_sources":{"elite_outdoor_brand_adoption":["https://polygiene.com/stayfresh/"],"permanent_fabric_integration":["https://polygiene.com/stayfresh/"],"skin_safe_and_microbiome_friendly":["https://polygiene.com/stayfresh/"],"silver_chloride_antimicrobial_mechanism":["https://polygiene.com/stayfresh/"],"independent_lca_water_and_energy_savings":["https://polygiene.com/odor-control-solutions/"],"bluesign_oeko_tex_eco_passport_reach_certifications":["https://polygiene.com/stayfresh/"]}},"recycled_polyester_microfibre":{"title":"Recycled polyester microfibre fabric feel and performance","entries":{"30_50_lighter_than_cotton":"Microfibre polyester fabrics weigh in at 70–150 grams per square metre—about 30–50% less than a comparable cotton knit—so the tank feels almost weightless on the body, reducing the thermal burden during long runs or hot‑weather training.","500_wash_cycle_durability":"The dense microfibre weave resists pilling and abrasion so effectively that laboratory testing has documented over 500 wash cycles without significant degradation, meaning the tank’s smooth, even surface won’t turn fuzzy or thin out prematurely.","jersey_knit_inherent_stretch":"The microfibre is jersey‑knitted rather than woven, which gives the fabric its signature stretch and recovery without necessarily relying on spandex—so the tank moves with the body through a full range of motion and snaps back to shape afterward, avoiding the saggy‑out look that can afflict less structured activewear.","sub_1_denier_microfibre_softness":"The jersey’s polyester microfibres are less than 1 denier thick—roughly 1/100th the diameter of a human hair—producing a peach‑skin surface that eliminates the synthetic scratchiness of standard polyester, so the tank feels closer to silk against sweaty skin than to a plastic‑like workout top.","recycled_polyester_tenacity_parity":"Despite being recycled, the polyester fibers in this tank achieve tenacities of 3.5–5.5 cN/dtex—identical to virgin polyester—so the fabric resists tearing and maintains its structural integrity through repeated high‑intensity wear and laundry cycles.","environmental_footprint_of_recycled_polyester":"Choosing recycled polyester over virgin cuts production energy use by 59%, CO₂ emissions by up to 75%, and water consumption by 90%, while each kilogram of rPET fibre repurposes roughly 60 post‑consumer bottles—making this tank a legitimate sustainability upgrade for the athlete who tracks impact alongside performance."},"entry_quotes":{"30_50_lighter_than_cotton":[{"url":"https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html","quote":"Microfiber polyester fabrics typically weigh between 70-150 grams per square meter, making them 30-50% lighter than comparable cotton fabrics."}],"500_wash_cycle_durability":[{"url":"https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html","quote":"Quality microfiber polyester textiles can withstand over 500 wash cycles without significant degradation."}],"jersey_knit_inherent_stretch":[{"url":"https://www.hongtaotextile.com/why-microfiber-polyester-dyed-fabric-has-excellent-moisture-wicking-properties/","quote":"knitted fabric coil structure elasticity and breathability, and microfiber capillary channel complementary, sweat better, suitable for sportswear."}],"sub_1_denier_microfibre_softness":[{"url":"https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html","quote":"Microfiber polyester is a synthetic fabric made from ultra-fine polyester fibers that are less than 1 denier in thickness—approximately 1/100th the diameter of a human hair."},{"url":"https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html","quote":"This results in a peach-skin or suede-like texture that feels significantly softer than standard polyester."}],"recycled_polyester_tenacity_parity":[{"url":"https://sansansports.com/polyester-vs-recycled-polyester/","quote":"Recycled polyester (rPET) often matches virgin polyester in strength and durability. Typical yarn tenacities range from 3.5–5.5 cN/dtex, comparable to conventional materials."}],"environmental_footprint_of_recycled_polyester":[{"url":"https://sansansports.com/polyester-vs-recycled-polyester/","quote":"rPET production uses approximately 59% less energy and reduces CO₂ emissions by 45-75% compared to virgin polyester manufacturing."},{"url":"https://sansansports.com/polyester-vs-recycled-polyester/","quote":"Water consumption for rPET production decreases by around 90% compared to making virgin polyester."},{"url":"https://sansansports.com/polyester-vs-recycled-polyester/","quote":"Each kilogram of rPET fiber helps divert approximately 60 PET bottles from waste streams."}]},"entry_sources":{"30_50_lighter_than_cotton":["https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html"],"500_wash_cycle_durability":["https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html"],"jersey_knit_inherent_stretch":["https://www.hongtaotextile.com/why-microfiber-polyester-dyed-fabric-has-excellent-moisture-wicking-properties/"],"sub_1_denier_microfibre_softness":["https://www.wjwtbf.com/news/industry-news/what-is-microfiber-polyester-complete-guide-to-fabric-properties.html"],"recycled_polyester_tenacity_parity":["https://sansansports.com/polyester-vs-recycled-polyester/"],"environmental_footprint_of_recycled_polyester":["https://sansansports.com/polyester-vs-recycled-polyester/"]}}}},"handle":"micro-perforated-muscle-t-shirt-16362-229897","storefront_path":"/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/micro-perforated-muscle-t-shirt--16362-229897","storefront_url":"https://ai.simons.ca/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/micro-perforated-muscle-t-shirt--16362-229897"}}