Under Armour Boys' Performance Polo Shirt Academy Boys Under Armour Performance Polo Boy's Polos in Pitch Gray Light Under Armour Boys Performance Polo Shirt Sport from excell sports.com UK Under Armour Boys Performance Polo Sport from excell sports.com UK White Polo Puffer Jacket The Street Fit Factory: Boys' Performance Polo Shirt For Boys. Introducing our Boys Performance Polo in Blue Drift Shell. This coastal polo is perfect for your favorite little boy, and a matching one for dad too! Made with moisture wicking material for ultimate comfort. It's destined to become your new favorite. Elevate your style with our exclusive collection. 94% Recycled Polyester, 6% Spandex. Machine wash cold, tumble dry low. Size: XS (4 5), S (6 7), M (8 10), L (10 12), XL (12 14). Imported.