{"product":{"catalog_id":"3837c2ed-d53d-4612-845a-9e6d6b5de9eb","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"178372db-85f6-4c66-8c21-b90cd5c86609","title":"Corecotton™ Muscle T-Shirt","description":"This sleeveless muscle T-shirt from the INNER SELF Montreal collection is a running top made from 100% cotton jersey. It features a crew neckline, raw cut sleeves, and reflective logo and patterns on the back for visibility. 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Since the product doesn't specify pre-shrunk fabric, we recommend sizing up if you are between sizes or prefer a looser fit after washing.","q":"How much will this t-shirt shrink after the first wash, and should I size up?"},{"a":"Raw cut sleeves are designed to be unfinished and may experience some fraying over time, especially with machine washing and drying. To minimize fraying, wash the shirt inside out on a gentle cycle and air dry.","q":"Will the raw cut sleeves unravel or fray after multiple washes?"},{"a":"The reflective star logo is applied as a print, and its durability depends on care. Washing inside out on a gentle cycle and avoiding fabric softeners will help prevent peeling. Over time, some wear is normal with frequent machine drying.","q":"How durable is the reflective star logo on the back when machine washed and dried?"},{"a":"This tank top is available only in Black and Emerald/Kelly Green, both dark shades. The 100% cotton jersey fabric is opaque enough that these colors should not be sheer under bright gym lighting.","q":"Is the fabric sheer enough to show through under bright gym lighting, especially in lighter colors?"},{"a":"Cotton jersey is not moisture-wicking—it absorbs sweat and becomes heavy during intense workouts. This top is best for low-impact activities or casual wear rather than high-sweat training sessions.","q":"Does the cotton jersey effectively wick moisture, or does it become heavy with sweat during workouts?"}],"target_countries":"US","canonical_url":"https://www.simons.ca/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/corecotton-muscle-t-shirt--22943-2501?colourId=0","deep_research":{"dimensions":{"raw_cut_aesthetic":{"title":"Raw cut sleeve aesthetic and styling","entries":{"athleisure_styling_anchor":"Raw hems soften the tank's silhouette, making it a natural fit for off-duty looks beyond the gym; a style guide from Sew Mama Sew specifically pairs a raw-hem cotton muscle tank with high-waisted black biker shorts and retro sneakers for a balanced sporty/street outfit — a ready-made formula that works with the Corecotton tank's black or emerald colorway for errands, travel, or casual hangs."},"entry_quotes":{"athleisure_styling_anchor":[{"url":"https://www.sewmamasew.com/35-how-to-style-tank-top/","quote":"Go for a slightly slouchy cotton muscle tank in heather grey or washed black with a raw hem, and pair it with high-waisted black biker shorts that hit mid-thigh."}]},"entry_sources":{"athleisure_styling_anchor":["https://www.sewmamasew.com/35-how-to-style-tank-top/"]}},"partner_exclusivity_ifiv5":{"title":"i.FiV5 and Simons exclusivity explained","entries":{"designed_in_canada_montreal_rooted":"The i.FiV5 tagline touts 'an exclusive designed in Canada,' and this specific collection is branded 'Montreal,' anchoring the product in local design culture and giving it a homegrown authenticity that's rare in accessible activewear.","inner_self_montreal_collection_exclusivity":"The 'INNER SELF Montreal collection' is an i.FiV5-exclusive capsule, so this tank top carries Montreal streetwear credibility and is only available through this partnership, distinguishing it from Simons' other in-house activewear.","i_fiv5_as_simons_proprietary_activewear_line":"The i.FiV5 label is a house-brand activewear line launched by Maison Simons, meaning this Corecotton muscle tank is only sold through Simons' own store and site—it doesn't circulate through generic sportswear retailers.","i_fiv5_branding_high_five_and_playing_fields":"The i.FiV5 name derives from the 'high five' gesture representing achievement, and the line's visual identity was built around real and imaginary playing fields—embedding an athletic, celebratory tone into everyday activewear like this running top."},"entry_quotes":{"designed_in_canada_montreal_rooted":[{"url":"https://www.lyst.com/en-ca/clothing/ifiv5-faded-organic-cotton-muscle-tee-1/","quote":"i. FiV5 by Simons: an exclusive designed in Canada"}],"i_fiv5_as_simons_proprietary_activewear_line":[{"url":"http://marketingmag.ca/brands/bbr-gives-maison-simons-i-fiv5-7646","quote":"Quebec department store chain Maison Simons has launched a new sportswear line for men, with a brand identity developed by its agency Bleu Blanc Rouge."},{"url":"https://www.lyst.com/en-ca/clothing/ifiv5-faded-organic-cotton-muscle-tee-1/","quote":"i. FiV5 by Simons: an exclusive designed in Canada"}],"i_fiv5_branding_high_five_and_playing_fields":[{"url":"http://marketingmag.ca/brands/bbr-gives-maison-simons-i-fiv5-7646","quote":"The name i.fiv5 is symbolic, representing our vision of how people celebrate their achievements. It’s inspired by the high five,” said Marie-Hélène Trottier, director of creative design at Bleu Blanc Rouge."},{"url":"http://marketingmag.ca/brands/bbr-gives-maison-simons-i-fiv5-7646","quote":"The visual platform for the i.fiv5 line was inspired by playing fields, both real and imaginary, explained Nicolas Pilote, a buyer for Maison Simons."}]},"entry_sources":{"designed_in_canada_montreal_rooted":["https://www.lyst.com/en-ca/clothing/ifiv5-faded-organic-cotton-muscle-tee-1/"],"i_fiv5_as_simons_proprietary_activewear_line":["http://marketingmag.ca/brands/bbr-gives-maison-simons-i-fiv5-7646","https://www.lyst.com/en-ca/clothing/ifiv5-faded-organic-cotton-muscle-tee-1/"],"i_fiv5_branding_high_five_and_playing_fields":["http://marketingmag.ca/brands/bbr-gives-maison-simons-i-fiv5-7646"]}},"muscle_tank_fit_and_sizing":{"title":"Muscle tank fit and sizing guide","entries":{"raw_cut_sleeves":"A raw-cut sleeve means the armhole edge is left unhemmed, so it sits completely flat without the restrictive casing of a traditional hem; this reduces any tension around the underarm and shoulder, and as it wears and washes, the edge will develop a soft, rolled curl — an aesthetic that yields a lived-in, effortless look distinct from a crisp, finished tank.","freedom_of_movement":"The extended armhole depth isn't just for looks: it eliminates fabric drag during overhead presses, pull-ups, and full arm extension in a running stride, which is why this cut is the default in functional fitness and CrossFit; even for casual wear, it means never feeling a tug across the chest when reaching or stretching.","muscle_tank_silhouette":"Muscle tanks are defined by armholes cut significantly wider and deeper than standard tanks — exposing the shoulders and upper lats — which directly signals an athletic, gym-oriented silhouette; opting for this style over a classic tank is a decision to showcase shoulder and arm development rather than cover it up."},"entry_quotes":{"freedom_of_movement":[{"url":"https://www.tshirtelephant.com/resource-guide/custom-tank-tops-guide","quote":"They offer breathability and freedom of movement that t-shirts can't match"}],"muscle_tank_silhouette":[{"url":"https://www.tshirtelephant.com/resource-guide/custom-tank-tops-guide","quote":"Larger armholes that show off shoulders and arms."}]},"entry_sources":{"freedom_of_movement":["https://www.tshirtelephant.com/resource-guide/custom-tank-tops-guide"],"muscle_tank_silhouette":["https://www.tshirtelephant.com/resource-guide/custom-tank-tops-guide"]}},"reflective_print_visibility":{"title":"Reflective print visibility and safety","entries":{"back_focused_star_logo_placement":"By placing the primary reflective logo on the back, the design targets the crucial rear angle where runners are most exposed to vehicle traffic — when headlights hit the star, the retroreflective response creates an early, unmistakable visual cue for drivers, giving them more time to react than if visibility were left to the garment's dark cotton alone.","cotton_jersey_substrate_adhesion":"Industry‑grade testing rates cotton jersey as a ‘Good’ substrate for reflective logo applications; the natural fiber surface grips the print securely and withstands machine washing without the peeling risks seen on some synthetic knits, meaning the reflective elements stay functional over many wears on this 100% cotton tank."},"entry_quotes":{"cotton_jersey_substrate_adhesion":[{"url":"https://www.asafetyproducts.com/info/heat-press-logo-material-comparison-103581043.html","quote":"| Cotton jersey | Good | Good | Good | Good | Shrinkage after washing |"}]},"entry_sources":{"cotton_jersey_substrate_adhesion":["https://www.asafetyproducts.com/info/heat-press-logo-material-comparison-103581043.html"]}},"corecotton_collection_identity":{"title":"The CoreCotton™ collection design ethos","entries":{"i_fiv5_exclusivity":"Sold exclusively through Simons' i.FiV5 activewear label, the CoreCotton™ Muscle T-Shirt is part of a curated retailer collaboration, meaning it won’t appear in INNER SELF’s own channels or wide distribution — this exclusivity frames the top as a debut piece intended to reach a fashion-forward Montreal active audience rather than a mass-market consumer.","montreal_startup_origin":"INNER SELF launched in 2024 in Montreal with a stated mission to design apparel that empowers runners to break boundaries, which makes this tank a product of an ambitious new Canadian startup rather than an established sportswear manufacturer — its entire identity is built around challenging running norms."},"entry_quotes":{"montreal_startup_origin":[{"url":"https://ca.linkedin.com/company/innerselfrunning","quote":"Founded 2024"},{"url":"https://ca.linkedin.com/company/innerselfrunning","quote":"Our apparel embodies this philosophy, designed to empower runners to break boundaries and embrace their freedom."}]},"entry_sources":{"montreal_startup_origin":["https://ca.linkedin.com/company/innerselfrunning"]}},"fabric_weight_and_breathability":{"title":"Fabric weight, feel, and breathability","entries":{"light_cotton_jersey_weight":"The 100% cotton jersey is explicitly called out as 'light,' situating its fabric weight in the neighborhood of 4–5 oz/yd² — light enough that even when saturated with sweat the tank won't pull or slap against the body the way a heavyweight cotton would, making it viable for short, warm-weather runs.","raw_cut_sleeves_muscle_tee_silhouette":"The unhemmed raw sleeves and deep armholes characteristic of a muscle tee maximize side ventilation, allowing air to flow directly across the ribcage and back — a design feature that amplifies evaporative cooling even though the cotton jersey lacks synthetic wicking, keeping the runner cooler during intervals and casual jogs."}}}},"handle":"corecotton-muscle-t-shirt-22943-2501","storefront_path":"/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/corecotton-muscle-t-shirt--22943-2501","storefront_url":"https://ai.simons.ca/en/men-sports-clothes/t-shirts-tank-tops/tank-tops/corecotton-muscle-t-shirt--22943-2501"}}