Nike Academy Football Optimize dribbling with textured casing, visibility with high-contrast graphics and accuracy with molded grooves so you can focus on the game not the equipment.Nike Aerowsculpt technology uses molded grooves to disrupt airflow across the ball for less drag and more stable flight.Rubber bladder helps maintain air pressure and shape. Textured casing has a consistent touch when passing, shooting and dribbling. More Details 67% rubber/13% polyester/10% ethylene vinyl acetate (EVA)/10% polyurethane (PU)Spot clean Available in 3 sizes: 3,4 and 5.