A Wilson, Basketball England and Dynamik Collaboration for the Dynamik Schools Competitions. The Wilson Reaction basketball is everything your game needs, and more. The ball features a composite leather laid in channels, for improved grip and control in game conditions. Features: Foiled logo design for a unique on court look High Performance Composite Cover improves grip Cushion Core Carcass allows a softer feel that's easier to grip Basketballs are deflated when shipped, therefore a pump is required to inflate the basketballs.