Train harder and feel even better in the Under Armour Boxed Sportstyle Short Sleeve. Crafted with Under Armour's Charged Cotton, this top stretches with you to elevate your workouts. Ideal for training, casual wear, or layering under your favorite shirt, the Under Armour Boxed Sportstyle Short Sleeve will quickly turn into your favorite. 60% cotton/40% polyester. Imported.