Wilson Evolution 27.5" Youth Indoor Basketball - WTB0576ID The Wilson Evolution 27.5" Youth Indoor Basketball features some of the latest high-end basketball technology on the market, making it the ideal ball for an up-and-coming player. Powered by an exclusive microfiber composite leather cover and Cushion Core Technology, this ball offers exceptional control and a soft feel that other balls don't offer. With its high-definition, pebbled composite channels the ball is NCAA and NFHS approved. You've never felt more at home on the court or more ready to step up your game. Microfiber Composite Leather Cover Don't be fooled; not all ball covers are the same. The microfiber composite leather on this basketball is unique and of the highest quality available on the market. Composite Laid-In Channels Wilson's patented Aqua-Grip pebbled composite leather channels are designed to improve grip over the rubber traditionally used in basketballs. Cushion Core Technology The soft feel that makes the Wilson Evolution game ball so incredible is the product of the unique combination of low-density sponge rubber and ultra-durable butyl rubber.