Under Armour Women's HeatGear Flyweight Tee Polyester & Elastane Machine Wash Super-soft, feather-light fabric eliminates the bulk for faster, lighter, cooler performance Signature Moisture Transport System wicks sweat to keep you cool, dry, and light Lightweight stretch construction improves mobility and accelerates dry time Anti-microbial technology eliminates odors to keep your gear fresher, longer 50+ UPF protects your skin from sun damage and premature aging