The Mitre #4 Azteca soccer ball is perfect for play anywhere and all surfaces Official size and weight, 32 panel machine sewn construction Super tough foam Backed TPU shell Multi-ply backing layers for consistent shape and rebound The Mitre Azteca soccer ball is perfect for play anywhere and on all types of surfaces. It features a 32 panel machine sewn construction , super tough foam backed TPU, multi-ply backing layers for consistent shape and rebound for a soft, but long lasting soccer ball. The Azteca has a high air retention bladder and high impact graphics. The ball ships deflated so a pump will be required to inflate the ball before use. Remember to moisten the needle before inserting into the ball.