HeatGear® is our original performance base layer, engineered for comfort, breathability and mobility in all conditions. It's the first layer you put on and the last you take off, thanks to its stretchy, breathable construction that lets you move freely. Ultra-light HeatGear® fabric provides optimal coverage without weighing you down, while mesh panels at the back and under the arms provide strategic ventilation to keep you cool during exercise. The material wicks sweat and dries quickly, keeping you dry even when you're working out. The ergonomic design is engineered to reduce abrasion by positioning seams away from sensitive areas for increased durability. Hybrid raglan sleeves offer greater range of motion and comfort, while a back collar tag lets you personalize with initials or numbers. Made from 84% polyester/16% elastane for the body and 92% polyester/8% elastane for the mesh, it offers ultra-snug compression that feels like a second skin. For care, it is recommended to machine wash the garment in cold water with similar colors, avoiding chlorine bleach and drying at high temperatures, while the use of fabric softeners, ironing and dry cleaning are not recommended.