HeatGear Armour 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 construction for added range of motion & comfort. Write-in locker tag on back of neck for your initials or number. Body: 84% Polyester/16% Elastane. Mesh: 92% Polyester/8% Elastane. Imported.