The Nike Premier League Academy Soccer Ball is ready for practice or the BIG game! It features mold grooves to limit drag, allowing your ball to sore new distances. It also has a rubber bladder, so it'll hold up to even the hardest kicks. Rubber bladder that'll maintain shape and air pressure. Nike Aerowsculpt for less drag and more flight. Materials: 67% Rubber, 13% Polyester, 10% Polyurethane (PU), 10% Ethylene Vinyl Acetate (EVA).