The Nike Academy Pro 21 Fifa Size 4 Football uses a rubber bladder to maintain air pressure and shape and uses high contrast graphics to let you track the ball and its spin. Aerowsculpt technology helps with your accuracy by using molded grooves for a consistent flight.• 60% Rubber/15% Polyurethane/13% Polyester/12% EVA.
• Nike Aerowsculpt technology uses molded grooves for more consistent flight.
• Rubber bladder helps maintain air pressure and shape.
• High-contrast graphics help you easily track the ball.
• Size 4.