# HeatGear® Armour - **Brand:** Under Armour - **Price:** $28.00 - **Catalog:** underarmour - **Retailer:** underarmour - **Product URL:** https://go.cosimo.shop/r/gAAAAABqzcb52k3N579WOkQvA3qC5tiuU0gZ0WGJoLLFq4Z6aVRu-xvk5l1UncQUAMQjwFm3Tv8_4Mpz-YpsPTGsRhi4VFZQ0uHkJSuf7_9FdrBKM1eZy5MfqctGlbNdrGmsLEt-Lsx-AoniRJe7l2S8V_ittAKsbtC7jSyUIISc7pNiX0cakL3xJM8s36AZsjhQKOFFMQXvxhjmimu1rt6zRY6klaKH_jY_GOQgt1tDgAuS1A43tO0bUXID4c8CiNGGIF_s-pZ5jtIYiJUOt36ke3OsYI06kUxEXwMckMvGTYDxeS2DOnBxX1gAloVUAQ1yUwwrwrx94Rhmk3L9cr1Qf5wl7NVsevFK7Qqyxqdj2wZXBo10jbR0nm3qmta5oi5pFRRgBUTgCk_UfTT_QouEWw1LMQNVGV9SWnzqetOeA6ANYf_zaZz9d23E5DlYYZrPOk3lzryvpSJOjBdlThHyNFxd0SYrwdPFcUNcxfRN0rR7y4B7594= - **GTIN:** 194514027780 - **Availability:** In stock ## Summary Boys' short sleeve athletic baselayer shirt made from a moisture-wicking polyester and elastane blend, designed for training and competition in the heat. ## Description Our boys' short sleeve baselayer shirt is engineered for young athletes training and competing in the heat. It wicks sweat, dries fast, and stretches 4 ways to keep kids cooler and moving freely. Made to wear as both a baselayer under pads/jersey or as a standalone training shirt. Built for the heat, not cold-weather layering. ## Appearance - **Colors:** Black / White - 001 (Out of Stock), Castlerock / White - 025 (Out of Stock), Steel / Black - 035 (Out of Stock), White / Black - 100 (Out of Stock), Forest Green / White - 301 (Out of Stock), Rack Green / White - 338 (Out of Stock), Marine OD Green / White - 390 (Out of Stock), Fade Green / Black - 391 (Out of Stock), Green Citrine / Black - 394 (Out of Stock), Royal / White - 400 (Out of Stock), Midnight Navy / White - 410 (Out of Stock), Blue Haze / White - 425 (Out of Stock), Fresco Blue / White - 481 (Out of Stock), Red / White - 600 (Out of Stock), Pink Frenzy / White - 637 (Out of Stock), Venom Red / Black - 690 (Out of Stock), Geode Green / White - 993 (Out of Stock), Black / White - 001 - **Sizes:** YLG, YMD, YSM, YXL, YXS (per-size availability under Variants) - **Materials:** Fabric: 90% Polyester/10% Elastane - **Fit:** Fitted: Close to body ## Variants - **In stock:** 88 of 90 - **Available:** Black / White - 001 (Out of Stock) / YXS, Black / White - 001 (Out of Stock) / YSM, Black / White - 001 (Out of Stock) / YMD, Black / White - 001 (Out of Stock) / YLG, Black / White - 001 (Out of Stock) / YXL, Castlerock / White - 025 (Out of Stock) / YXS, Castlerock / White - 025 (Out of Stock) / YSM, Castlerock / White - 025 (Out of Stock) / YMD, Castlerock / White - 025 (Out of Stock) / YLG, Castlerock / White - 025 (Out of Stock) / YXL, Steel / Black - 035 (Out of Stock) / YXS, Steel / Black - 035 (Out of Stock) / YSM, Steel / Black - 035 (Out of Stock) / YMD, Steel / Black - 035 (Out of Stock) / YLG, Steel / Black - 035 (Out of Stock) / YXL, White / Black - 100 (Out of Stock) / YXS, White / Black - 100 (Out of Stock) / YSM, White / Black - 100 (Out of Stock) / YMD, White / Black - 100 (Out of Stock) / YLG, White / Black - 100 (Out of Stock) / YXL, Forest Green / White - 301 (Out of Stock) / YXS, Forest Green / White - 301 (Out of Stock) / YSM, Forest Green / White - 301 (Out of Stock) / YMD, Forest Green / White - 301 (Out of Stock) / YLG, Forest Green / White - 301 (Out of Stock) / YXL, Rack Green / White - 338 (Out of Stock) / YXS, Rack Green / White - 338 (Out of Stock) / YSM, Rack Green / White - 338 (Out of Stock) / YMD, Rack Green / White - 338 (Out of Stock) / YLG, Rack Green / White - 338 (Out of Stock) / YXL, Marine OD Green / White - 390 (Out of Stock) / YXS, Marine OD Green / White - 390 (Out of Stock) / YSM, Marine OD Green / White - 390 (Out of Stock) / YMD, Marine OD Green / White - 390 (Out of Stock) / YLG, Marine OD Green / White - 390 (Out of Stock) / YXL, Fade Green / Black - 391 (Out of Stock) / YXS, Fade Green / Black - 391 (Out of Stock) / YSM, Fade Green / Black - 391 (Out of Stock) / YMD, Fade Green / Black - 391 (Out of Stock) / YLG, Fade Green / Black - 391 (Out of Stock) / YXL, Green Citrine / Black - 394 (Out of Stock) / YXS, Green Citrine / Black - 394 (Out of Stock) / YSM, Green Citrine / Black - 394 (Out of Stock) / YMD, Green Citrine / Black - 394 (Out of Stock) / YLG, Green Citrine / Black - 394 (Out of Stock) / YXL, Royal / White - 400 (Out of Stock) / YXS, Royal / White - 400 (Out of Stock) / YSM, Royal / White - 400 (Out of Stock) / YMD, Royal / White - 400 (Out of Stock) / YLG, Royal / White - 400 (Out of Stock) / YXL, Midnight Navy / White - 410 (Out of Stock) / YXS, Midnight Navy / White - 410 (Out of Stock) / YSM, Midnight Navy / White - 410 (Out of Stock) / YMD, Midnight Navy / White - 410 (Out of Stock) / YLG, Midnight Navy / White - 410 (Out of Stock) / YXL, Blue Haze / White - 425 (Out of Stock) / YXS, Blue Haze / White - 425 (Out of Stock) / YSM, Blue Haze / White - 425 (Out of Stock) / YMD, Blue Haze / White - 425 (Out of Stock) / YLG, Blue Haze / White - 425 (Out of Stock) / YXL, Fresco Blue / White - 481 (Out of Stock) / YXS, Fresco Blue / White - 481 (Out of Stock) / YSM, Fresco Blue / White - 481 (Out of Stock) / YMD, Fresco Blue / White - 481 (Out of Stock) / YLG, Fresco Blue / White - 481 (Out of Stock) / YXL, Red / White - 600 (Out of Stock) / YSM, Red / White - 600 (Out of Stock) / YMD, Red / White - 600 (Out of Stock) / YXL, Pink Frenzy / White - 637 (Out of Stock) / YXS, Pink Frenzy / White - 637 (Out of Stock) / YSM, Pink Frenzy / White - 637 (Out of Stock) / YMD, Pink Frenzy / White - 637 (Out of Stock) / YLG, Pink Frenzy / White - 637 (Out of Stock) / YXL, Venom Red / Black - 690 (Out of Stock) / YXS, Venom Red / Black - 690 (Out of Stock) / YSM, Venom Red / Black - 690 (Out of Stock) / YMD, Venom Red / Black - 690 (Out of Stock) / YLG, Venom Red / Black - 690 (Out of Stock) / YXL, Geode Green / White - 993 (Out of Stock) / YXS, Geode Green / White - 993 (Out of Stock) / YSM, Geode Green / White - 993 (Out of Stock) / YMD, Geode Green / White - 993 (Out of Stock) / YLG, Geode Green / White - 993 (Out of Stock) / YXL, Black / White - 001 / YXS, Black / White - 001 / YSM, Black / White - 001 / YMD, Black / White - 001 / YLG, Black / White - 001 / YXL | Size | Color | SKU | Availability | | --- | --- | --- | --- | | YXS | Black / White - 001 (Out of Stock) | 1361723-001-YXS | In stock | | YSM | Black / White - 001 (Out of Stock) | 1361723-001-YSM | In stock | | YMD | Black / White - 001 (Out of Stock) | 1361723-001-YMD | In stock | | YLG | Black / White - 001 (Out of Stock) | 1361723-001-YLG | In stock | | YXL | Black / White - 001 (Out of Stock) | 1361723-001-YXL | In stock | | YXS | Castlerock / White - 025 (Out of Stock) | 1361723-025-YXS | In stock | | YSM | Castlerock / White - 025 (Out of Stock) | 1361723-025-YSM | In stock | | YMD | Castlerock / White - 025 (Out of Stock) | 1361723-025-YMD | In stock | | YLG | Castlerock / White - 025 (Out of Stock) | 1361723-025-YLG | In stock | | YXL | Castlerock / White - 025 (Out of Stock) | 1361723-025-YXL | In stock | | YXS | Steel / Black - 035 (Out of Stock) | 1361723-035-YXS | In stock | | YSM | Steel / Black - 035 (Out of Stock) | 1361723-035-YSM | In stock | | YMD | Steel / Black - 035 (Out of Stock) | 1361723-035-YMD | In stock | | YLG | Steel / Black - 035 (Out of Stock) | 1361723-035-YLG | In stock | | YXL | Steel / Black - 035 (Out of Stock) | 1361723-035-YXL | In stock | | YXS | White / Black - 100 (Out of Stock) | 1361723-100-YXS | In stock | | YSM | White / Black - 100 (Out of Stock) | 1361723-100-YSM | In stock | | YMD | White / Black - 100 (Out of Stock) | 1361723-100-YMD | In stock | | YLG | White / Black - 100 (Out of Stock) | 1361723-100-YLG | In stock | | YXL | White / Black - 100 (Out of Stock) | 1361723-100-YXL | In stock | | YXS | Forest Green / White - 301 (Out of Stock) | 1361723-301-YXS | In stock | | YSM | Forest Green / White - 301 (Out of Stock) | 1361723-301-YSM | In stock | | YMD | Forest Green / White - 301 (Out of Stock) | 1361723-301-YMD | In stock | | YLG | Forest Green / White - 301 (Out of Stock) | 1361723-301-YLG | In stock | | YXL | Forest Green / White - 301 (Out of Stock) | 1361723-301-YXL | In stock | | YXS | Rack Green / White - 338 (Out of Stock) | 1361723-338-YXS | In stock | | YSM | Rack Green / White - 338 (Out of Stock) | 1361723-338-YSM | In stock | | YMD | Rack Green / White - 338 (Out of Stock) | 1361723-338-YMD | In stock | | YLG | Rack Green / White - 338 (Out of Stock) | 1361723-338-YLG | In stock | | YXL | Rack Green / White - 338 (Out of Stock) | 1361723-338-YXL | In stock | | YXS | Marine OD Green / White - 390 (Out of Stock) | 1361723-390-YXS | In stock | | YSM | Marine OD Green / White - 390 (Out of Stock) | 1361723-390-YSM | In stock | | YMD | Marine OD Green / White - 390 (Out of Stock) | 1361723-390-YMD | In stock | | YLG | Marine OD Green / White - 390 (Out of Stock) | 1361723-390-YLG | In stock | | YXL | Marine OD Green / White - 390 (Out of Stock) | 1361723-390-YXL | In stock | | YXS | Fade Green / Black - 391 (Out of Stock) | 1361723-391-YXS | In stock | | YSM | Fade Green / Black - 391 (Out of Stock) | 1361723-391-YSM | In stock | | YMD | Fade Green / Black - 391 (Out of Stock) | 1361723-391-YMD | In stock | | YLG | Fade Green / Black - 391 (Out of Stock) | 1361723-391-YLG | In stock | | YXL | Fade Green / Black - 391 (Out of Stock) | 1361723-391-YXL | In stock | | YXS | Green Citrine / Black - 394 (Out of Stock) | 1361723-394-YXS | In stock | | YSM | Green Citrine / Black - 394 (Out of Stock) | 1361723-394-YSM | In stock | | YMD | Green Citrine / Black - 394 (Out of Stock) | 1361723-394-YMD | In stock | | YLG | Green Citrine / Black - 394 (Out of Stock) | 1361723-394-YLG | In stock | | YXL | Green Citrine / Black - 394 (Out of Stock) | 1361723-394-YXL | In stock | | YXS | Royal / White - 400 (Out of Stock) | 1361723-400-YXS | In stock | | YSM | Royal / White - 400 (Out of Stock) | 1361723-400-YSM | In stock | | YMD | Royal / White - 400 (Out of Stock) | 1361723-400-YMD | In stock | | YLG | Royal / White - 400 (Out of Stock) | 1361723-400-YLG | In stock | | YXL | Royal / White - 400 (Out of Stock) | 1361723-400-YXL | In stock | | YXS | Midnight Navy / White - 410 (Out of Stock) | 1361723-410-YXS | In stock | | YSM | Midnight Navy / White - 410 (Out of Stock) | 1361723-410-YSM | In stock | | YMD | Midnight Navy / White - 410 (Out of Stock) | 1361723-410-YMD | In stock | | YLG | Midnight Navy / White - 410 (Out of Stock) | 1361723-410-YLG | In stock | | YXL | Midnight Navy / White - 410 (Out of Stock) | 1361723-410-YXL | In stock | | YXS | Blue Haze / White - 425 (Out of Stock) | 1361723-425-YXS | In stock | | YSM | Blue Haze / White - 425 (Out of Stock) | 1361723-425-YSM | In stock | | YMD | Blue Haze / White - 425 (Out of Stock) | 1361723-425-YMD | In stock | | YLG | Blue Haze / White - 425 (Out of Stock) | 1361723-425-YLG | In stock | | YXL | Blue Haze / White - 425 (Out of Stock) | 1361723-425-YXL | In stock | | YXS | Fresco Blue / White - 481 (Out of Stock) | 1361723-481-YXS | In stock | | YSM | Fresco Blue / White - 481 (Out of Stock) | 1361723-481-YSM | In stock | | YMD | Fresco Blue / White - 481 (Out of Stock) | 1361723-481-YMD | In stock | | YLG | Fresco Blue / White - 481 (Out of Stock) | 1361723-481-YLG | In stock | | YXL | Fresco Blue / White - 481 (Out of Stock) | 1361723-481-YXL | In stock | | YXS | Red / White - 600 (Out of Stock) | 1361723-600-YXS | Out of stock | | YSM | Red / White - 600 (Out of Stock) | 1361723-600-YSM | In stock | | YMD | Red / White - 600 (Out of Stock) | 1361723-600-YMD | In stock | | YLG | Red / White - 600 (Out of Stock) | 1361723-600-YLG | Out of stock | | YXL | Red / White - 600 (Out of Stock) | 1361723-600-YXL | In stock | | YXS | Pink Frenzy / White - 637 (Out of Stock) | 1361723-637-YXS | In stock | | YSM | Pink Frenzy / White - 637 (Out of Stock) | 1361723-637-YSM | In stock | | YMD | Pink Frenzy / White - 637 (Out of Stock) | 1361723-637-YMD | In stock | | YLG | Pink Frenzy / White - 637 (Out of Stock) | 1361723-637-YLG | In stock | | YXL | Pink Frenzy / White - 637 (Out of Stock) | 1361723-637-YXL | In stock | | YXS | Venom Red / Black - 690 (Out of Stock) | 1361723-690-YXS | In stock | | YSM | Venom Red / Black - 690 (Out of Stock) | 1361723-690-YSM | In stock | | YMD | Venom Red / Black - 690 (Out of Stock) | 1361723-690-YMD | In stock | | YLG | Venom Red / Black - 690 (Out of Stock) | 1361723-690-YLG | In stock | | YXL | Venom Red / Black - 690 (Out of Stock) | 1361723-690-YXL | In stock | | YXS | Geode Green / White - 993 (Out of Stock) | 1361723-993-YXS | In stock | | YSM | Geode Green / White - 993 (Out of Stock) | 1361723-993-YSM | In stock | | YMD | Geode Green / White - 993 (Out of Stock) | 1361723-993-YMD | In stock | | YLG | Geode Green / White - 993 (Out of Stock) | 1361723-993-YLG | In stock | | YXL | Geode Green / White - 993 (Out of Stock) | 1361723-993-YXL | In stock | | YXS | Black / White - 001 | — | In stock | | YSM | Black / White - 001 | — | In stock | | YMD | Black / White - 001 | — | In stock | | YLG | Black / White - 001 | — | In stock | | YXL | Black / White - 001 | — | In stock | ## Categories - **Categories:** Kids > Boys > Shirts & Tops ## Additional Attributes - **fit:** Fit: Snug baselayer cut, not compression—runs 1 to size - **brand:** UnderArmour - **fabric:** Fabric: 90% Polyester/10% Elastane - **best for:** Best for: a hot-weather training, football, baseball & lacrosse baselayer, or as a standalone practice shirt - **features:** Wicks sweat off the skin & dries fast so young athletes stay cooler through long, hot practices, Strategic mesh panels add airflow where heat builds, so kids stay comfortable when the pace picks up, HeatGear® fabric delivers ultra-smooth, lightweight coverage that doesn't weigh young athletes down, Ergonomic flatlock seams lie flat against the skin to eliminate chafing during high-movement activity, 4-way stretch moves with the body in every direction, so nothing slows a young athlete down, Built to layer under a football, baseball or lacrosse jersey without bunching, shifting or adding bulk, Odor control technology minimizes odor through extended wear & back-to-back practice days, The snug, close-to-body fit functions as a kids’ baselayer without the squeeze of 1 compression, Fitted, Imported, Machine wash cold with like colors; use only non-chlorine bleach when needed; tumble dry low, Do not iron, dry clean, or use softeners—they coat fibers & degrade wicking over time, Customers praise true-to-size fit with snug compression that stays secure during intense athletic movement, Most highlight effective moisture management and dryness in hot, humid conditions during sports, Reviewers commend durable, lightweight fabric that resists pilling, shrinking, and pet hair, Many use shirts versatilely for basketball, football, workouts, and daily training, Nearly all express strong repeat purchase intent and satisfaction with overall quality - **material:** Fabric: 90% Polyester/10% Elastane - **style number:** Style #: 1361723 - **positivenotes:** Keeps You Cool, Fast-Drying, Ventilated - **merchantreturndays:** 60 ## Enrichment - **Type:** baselayer shirt - **Type Synonyms:** compression shirt, training tee, undershirt - **Gender:** male - **Age Groups:** kids - **Activewear:** Yes - **Tags:** short sleeve, crew neck, moisture-wicking, stretch fabric, athletic fit - **Styles:** sporty, athletic - **Colors:** black, white - **Color Families:** Black, White - **Category Path:** Apparel & Accessories > Clothing > Underwear & Sleepwear > Sleep & Loungewear > Thermals & Base Layers - **Fabric:** Elastane (Spandex / Lycra), Polyester - **General Clothing Features:** Stretchable - **Insulation Level:** Cooling - **Pattern:** Logo, Solid - **Canonical Brand:** Under Armour ## Images - ![Image 1](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/29f2a7870399255032dff5c367f2f797.webp) - ![Image 2](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/f465722d9303441a6c3c53e4e4042eef.webp) - ![Image 3](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/b83559ebc029cb5635406a0475dc6de0.webp) - ![Image 4](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/ff44418dee276c0ef2c8835d6807a618.webp) - ![Image 5](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/f8efea66d921084f8cf95fcc117fb9b0.webp) - ![Image 6](https://cdn.octogen.ai/1a495214c34bb69880be1a2904b4c447/de043dfcd3e8a901dd947db72ced6b5f.webp) --- *Source: cosimo.shop | Product ID: 5464d464-83e2-5bcb-96b6-2d38d91fe10f | Canonical URL: https://cosimo.shop/product/under-armour/heatgear-armour-de5a8ba4-7755-4862-bbf1-1e91d7d9c415*