Under Armour Men's HeatGear&reg; Tactical Short Sleeve T-Shirt Smooth anti-pick, anti-pill fabric maximizes comfort and has a cleaner, snag-free finish. Signature Moisture Transport System wicks sweat away from the body. Anti-Odor technology prevents the growth of odor causing microbes. Smooth, chafe-free flatlock seam construction. 4.5 oz. Polyester. Imported.