Nike Strike Team Pro Match FootballProduct Code: Size 4 SC3936 / Size 5 SC3539Decisive accuracy.FIFA Approved (Size 5 only)12 panel design for true and accurate ball flight. Textured casing offers imporved touch and feel. Reinforced rubber bladder enhances air and shape retention. Nike Aerowtrac grooves help stabilize the ball flight. High contrast graphics for easy ball tracking. Fabric: 60% rubber, 15% polyurethane, 13% polyester, 12% EVA.