{"product_id":"custom-racerback-loose-sleeveless-marathon-vest-athletic-sports-shirts","title":"Custom Racerback Loose Sleeveless Marathon Vest | Athletic Sports Shirts","description":"\u003cdiv style=\"font-family: Arial, sans-serif; color: #3D2830; background-color: #DAD2D1; padding: 9px; line-height: 1.6;\"\u003e\n\n  \u003ch2 style=\"color: #3D2830; border-bottom: 2px solid #3D2830; padding: 9px; margin-top: 0;\"\u003eAthletic Performance Tank Contract Sourcing Architecture\u003c\/h2\u003e\n  \u003cp style=\"padding: 9px; margin: 0;\"\u003e\n    Why are your private label fitness apparel lines constantly arriving from regional print shops with rippled armhole bindings, fading graphics, and skewed panel seams after the first high-heat transfer run? Sourcing directors organizing extensive marathon events or managing corporate gym inventories face substantial capital waste when off-the-shelf training blanks lack the fiber stabilization required for commercial customization setups. This factory-direct contract sleeveless shirt addresses those structural vulnerabilities by utilizing a pre-shrunk, 100% polyester interlock knit base engineered specifically for thermal stability and high airflow permeability. Featuring a sporty crew neck and a loose fit cut, this solid-pattern training top delivers a highly stable, wear-resistant foundation built to survive the heavy demands of commercial laundering, intense athletic competition, and precision logo applications.\n  \u003c\/p\u003e\n  \u003cul style=\"padding-left: 24px; margin: 9px 0;\"\u003e\n    \u003cli style=\"padding: 9px 0;\"\u003e\n\u003cstrong\u003eSubstrate Composition:\u003c\/strong\u003e 100 percent polyester performance knit yarn.\u003c\/li\u003e\n    \u003cli style=\"padding: 9px 0;\"\u003e\n\u003cstrong\u003ePattern Engineering:\u003c\/strong\u003e Ergonomic H-shaped racerback cut designed for unrestricted shoulder articulation.\u003c\/li\u003e\n    \u003cli style=\"padding: 9px 0;\"\u003e\n\u003cstrong\u003eThermal Defense Matrix:\u003c\/strong\u003e Built-in quick dry moisture-wicking capillary configuration to speed up sweat evaporation.\u003c\/li\u003e\n    \u003cli style=\"padding: 9px 0;\"\u003e\n\u003cstrong\u003eCustomization Alignment:\u003c\/strong\u003e Full factory support for custom sizing grading, custom colors, label printing, and custom poly bag packing.\u003c\/li\u003e\n    \u003cli style=\"padding: 9px 0;\"\u003e\n\u003cstrong\u003eSupply Capacity:\u003c\/strong\u003e High-volume Fujian contract facility supporting rapid 7-day sample order lead times.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2 style=\"color: #3D2830; border-bottom: 2px solid #3D2830; padding: 9px; margin-top: 18px;\"\u003eGarment Specifications \u0026amp; Sizing Measurement Table\u003c\/h2\u003e\n  \u003cp style=\"padding: 9px; margin: 0; font-size: 13px; font-style: italic;\"\u003eNote: Size values are transcribed directly from factory production line grading documentation. Due to manual measurement variations, an error within 1-2cm is considered within a reasonable range. For customized printing products, no return or exchange service is provided for size issues. All dimensions are listed in metric centimeters (cm).\u003c\/p\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 9px; background-color: #FFFFFF;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color: #3D2830; color: #DAD2D1;\"\u003e\n        \u003cth style=\"border: 1px solid #3D2830; padding: 9px; text-align: left;\"\u003eSize Specification\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #3D2830; padding: 9px; text-align: left;\"\u003eTotal Body Length\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #3D2830; padding: 9px; text-align: left;\"\u003eBust Width (Half)\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #3D2830; padding: 9px; text-align: left;\"\u003eBottom Width (Half)\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #3D2830; padding: 9px; text-align: left;\"\u003eShoulder Width\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px; font-weight: bold;\"\u003eS\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e66 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e94 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e92 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e30 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #F9F9F9;\"\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px; font-weight: bold;\"\u003eM\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e68 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e98 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e96 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e31 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px; font-weight: bold;\"\u003eL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e70 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e102 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e100 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e32 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #F9F9F9;\"\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px; font-weight: bold;\"\u003eXL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e72 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e106 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e104 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e33 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px; font-weight: bold;\"\u003eXXL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e74 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e110 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e108 cm\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #3D2830; padding: 9px;\"\u003e34 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2 style=\"color: #3D2830; border-bottom: 2px solid #3D2830; padding: 9px; margin-top: 18px;\"\u003eMaterial Architecture and Applied Seam Engineering Analysis\u003c\/h2\u003e\n  \u003cp style=\"padding: 9px; margin: 0;\"\u003e\n    Standard open-end cotton or low-grade blended activewear shirts frequently experience severe fabric saturation, moisture tracking breakdown, and permanent side-seam twisting when exposed to repetitive training stress or high-humidity distribution channels. This 100 percent polyester model eliminates those vulnerabilities by deploying an inline heat-stabilized knit layout that preserves its physical structure. The interior capillary pathways actively spread sweat across an expanded surface layer to facilitate quick dry performance, ensuring the tank tops remain breathable and light during long-distance marathons or intensive basketball training sessions.\n  \u003c\/p\u003e\n  \u003cp style=\"padding: 9px; margin: 0;\"\u003e\n    The integrated racerback H-shaped panel construction requires specialized cutting precision to safeguard cross-grain stretch memory. Our factory cutting lines process materials strictly via computerized digital CAD templates, restricting size variations to within a strict 1-2cm window across our small to XXL parameters. Neck and sleeve cuffs are completed using multi-thread overlock bindings to eliminate loose edges and raw friction points, providing athletes with a smooth fit that minimizes skin irritation during high-velocity rotation.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"color: #3D2830; border-bottom: 2px solid #3D2830; padding: 9px; margin-top: 18px;\"\u003eCommercial Sourcing \u0026amp; Operational Deployment\u003c\/h2\u003e\n  \n  \u003ch3 style=\"color: #3D2830; margin-top: 9px;\"\u003e1. Commercial Gym Franchises and Boutique Fitness Studio Network Programs\u003c\/h3\u003e\n  \u003cp style=\"padding: 9px; margin: 0;\"\u003e\n    For fitness brand procurement officers launching private label gym apparel programs, this loose fit sports tank provides an adaptable, durable canvas. Sourcing teams can utilize our complete factory customization services to integrate custom neck tags, branded main labels, and printed frosted zipper bags. This flexible structure enables procurement managers to manage inventory risk effectively, adjusting order sizes based on real-time club member consumption data and seasonal promotion schedules.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color: #3D2830; margin-top: 9px;\"\u003e2. Multi-City Marathon Events and High-Intensity Athletic Competitions\u003c\/h3\u003e\n  \u003cp style=\"padding: 9px; margin: 0;\"\u003e\n    Organizers managing large-scale running events require high-performance, lightweight sports shirts that keep participants cool under warm weather conditions. The solid-color interlock knit accommodates a wide variety of custom logo techniques, including precision silk screen printing, high-density heat-transfers, or reflective ink setups for visibility during low-light road races. Our stable fixation processes ensure that logos remain sharp and legible across the entire runner field, maximizing sponsor brand exposure.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"color: #3D2830; margin-top: 9px;\"\u003e3. Collegiate Sports Leagues and Community Basketball Club Team Kits\u003c\/h3\u003e\n  \u003cp style=\"padding: 9px; margin: 0;\"\u003e\n    Athletic directors sourcing uniform components for school leagues or local basketball clubs require garments that maintain a consistent fit across multi-season schedules. This loose-fitting sporty vest offers excellent shoulder flexibility for defensive movements on the court. Because our factory line maintains strict direct-to-mill yarn dye-lot controls, mid-season replacement orders match your team’s original colorway perfectly, avoiding mixed-batch appearance issues.\n  \u003c\/p\u003e\n\n  \u003ch2 style=\"color: #3D2830; border-bottom: 2px solid #3D2830; padding: 9px; margin-top: 18px;\"\u003eContract Manufacturing Procurement FAQ\u003c\/h2\u003e\n  \n  \u003cp style=\"margin: 9px 0;\"\u003e\u003cstrong\u003eWhat quality control gate ensures that small and XXL shipments maintain identical fit metrics across a volume wholesale order?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp style=\"padding: 9px; margin: 0; background-color: #FFFFFF;\"\u003e\n    We eliminate size grading drift by locking our fabric rolls into computerized digital CAD cutting tables before assembly. This mechanical approach eliminates manual cutting errors, ensuring that half-bust dimensions stay locked at 94cm for size small up to 110cm for XXL units, providing complete dimension consistency across all packing crates.\n  \u003c\/p\u003e\n\n  \u003cp style=\"margin: 9px 0;\"\u003e\u003cstrong\u003eHow does the factory prevent dye bleeding when adding white corporate sponsor logos onto dark polyester backdrops?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp style=\"padding: 9px; margin: 0; background-color: #FFFFFF;\"\u003e\n    Our fabric division processes all colored polyester substrates using specialized disperse fixing methods at calibrated temperatures inside an inline laboratory. This step binds the base pigments securely to the synthetic fiber structure, guaranteeing that when your print team applies high-heat film transfers or plastisol inks, the graphic edges stay clean with zero color migration.\n  \u003c\/p\u003e\n\n  \u003cp style=\"margin: 9px 0;\"\u003e\u003cstrong\u003eWhat are the technical packaging controls and moisture protection workflows for long-distance maritime container transport?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp style=\"padding: 9px; margin: 0; background-color: #FFFFFF;\"\u003e\n    Completed wholesale shipments are prepared in individual flat poly liners measuring 35X25X3 cm with an individual piece gross weight of 0.200 kg. These bundles are stacked tightly inside double-wall corrugated master containers lined with heavy poly moisture barriers and industrial desiccant packs, protecting your custom activewear stock from humidity during transcontinental transit.\n  \u003c\/p\u003e\n\n  \u003cp style=\"margin: 9px 0;\"\u003e\u003cstrong\u003eCan our sourcing department mix multiple custom colors and custom size paths within our minimum order commitment?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp style=\"padding: 9px; margin: 0; background-color: #FFFFFF;\"\u003e\n    Yes. Sourcing departments can distribute their wholesale contract allocations across our standard S, M, L, XL, and XXL sizing chart options. By submitting your required size distribution and Pantone color codes during the pre-production layout window, our team will coordinate the assembly line to match your specific group profiles.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"margin-top: 24px; text-align: center;\"\u003e\n    \u003cbutton class=\"header-cta-btn header-cta-btn--quote\" type=\"button\" data-open-header-quote style=\"background-color: #3D2830; color: #DAD2D1; border: none; padding: 12px 24px; font-size: 16px; font-weight: bold; cursor: pointer; border-radius: 4px; box-shadow: 0 2px 4px rgba(0,0,0,0.2);\"\u003eGet a Quote\u003c\/button\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"apparellots","offers":[{"title":"Sky Blue \/ S","offer_id":52503273701688,"sku":"107814213387","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ M","offer_id":52503273734456,"sku":"107814213393","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ L","offer_id":52503273767224,"sku":"107814213399","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ Xl","offer_id":52503273799992,"sku":"107814213405","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ 2 XL","offer_id":52503273832760,"sku":"107814213411","price":3.85,"currency_code":"USD","in_stock":true},{"title":"White \/ S","offer_id":52503273865528,"sku":"107814213388","price":3.85,"currency_code":"USD","in_stock":true},{"title":"White \/ M","offer_id":52503273898296,"sku":"107814213394","price":3.85,"currency_code":"USD","in_stock":true},{"title":"White \/ L","offer_id":52503273931064,"sku":"107814213400","price":3.85,"currency_code":"USD","in_stock":true},{"title":"White \/ Xl","offer_id":52503273963832,"sku":"107814213406","price":3.85,"currency_code":"USD","in_stock":true},{"title":"White \/ 2 XL","offer_id":52503273996600,"sku":"107814213412","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Navy \/ S","offer_id":52503274029368,"sku":"107814213389","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Navy \/ M","offer_id":52503274062136,"sku":"107814213395","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Navy \/ L","offer_id":52503274094904,"sku":"107814213401","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Navy \/ Xl","offer_id":52503274127672,"sku":"107814213407","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Navy \/ 2 XL","offer_id":52503274160440,"sku":"107814213413","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Watermelon Red \/ S","offer_id":52503274193208,"sku":"107814213390","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Watermelon Red \/ M","offer_id":52503274225976,"sku":"107814213396","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Watermelon Red \/ L","offer_id":52503274258744,"sku":"107814213402","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Watermelon Red \/ Xl","offer_id":52503274291512,"sku":"107814213408","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Watermelon Red \/ 2 XL","offer_id":52503274324280,"sku":"107814213414","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Gray \/ S","offer_id":52503274357048,"sku":"107814213391","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Gray \/ M","offer_id":52503274389816,"sku":"107814213397","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Gray \/ L","offer_id":52503274422584,"sku":"107814213403","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Gray \/ Xl","offer_id":52503274455352,"sku":"107814213409","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Gray \/ 2 XL","offer_id":52503274488120,"sku":"107814213415","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Black \/ S","offer_id":52503274520888,"sku":"107814213392","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Black \/ M","offer_id":52503274553656,"sku":"107814213398","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":52503274586424,"sku":"107814213404","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Black \/ Xl","offer_id":52503274619192,"sku":"107814213410","price":3.85,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2 XL","offer_id":52503274651960,"sku":"107814213416","price":3.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/5254\/6616\/files\/Hea164bbc854949e3a89241a1ca810870o.webp?v=1781433540","url":"https:\/\/www.apparellots.com\/products\/custom-racerback-loose-sleeveless-marathon-vest-athletic-sports-shirts","provider":"apparellots","version":"1.0","type":"link"}