HeatGear® is our original performance baselayer—the one you put on first and take off last. So we made it extra comfortable by wicking sweat and stretching so you can move no matter what Super-light HeatGear® fabric delivers superior coverage without weighing you down Mesh underarm & back panels for strategic ventilation Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Ergonomic design keeps seams off high abrasion areas & increases durability Hybrid raglan sleeve for added range of motion & comfort Style #: 1370324 Write-in locker tag on back of neck for your initials or number Body: 84% Polyester/16% Elastane Mesh: 92% Polyester/8% Elastane Imported Compression:Ultra-tight, second-skin fit. Wash garment inside out Machine wash cold with like colors Use only non-chlorine bleach when needed Tumble dry low Do not iron Do not use softeners Do not dry clean