This size 7 basketball is perfect for improving your game. Polyurethane exterior for an excellent ball feel. Design benefits : Ball touch Polyurethane cover provides an excellent feel. Lasting air retention Can go longer between re-inflations thanks to a bladder made with 50% butyl. Bounce Bladder covered by 70% polyester and 30% nylon for excellent bounce. Robustness Good robustness thanks to the 1.4 mm polyurethane outer cover.