Under Armour Armour Ua B Locker Iv Sl Sports Sandals for boys. These slides are perfect for locker room or poolside use, featuring a quick-drying, one-piece molded EVA construction. The strap, footbed, and outsole are engineered to efficiently transport water away from the foot. They are versatile enough to be used as shower shoes, beach shoes, pool slippers, or simply for lounging. Made with a synthetic upper and a rubber and polyurethane outsole.