Wilson Wave Phenom All Surface Basketball 29.5 inch Basketball phenoms aren't just born. They are made through tireless effort and focus. Maximize your training with the Wave Phenom. Its Triple Wave Technology helps to improve feel and grip, which can help your handle and jumper. You don have to be a phenom to make yourself into the best player you can. Features: Wave Triple Threat Technology offers an additional 24 T3 grooves in the normal flat panels for better control All Surface Cover and Pebbled Rubber channel improves grip 29.5 IN (size 7) ball suitable for men and boys 12 and older Outdoor Use Channel Construction: Pebbled Rubber Cover Construction: Composite Ball Size: Official - 29.5 inch Playing Surface Indoor/Outdoor Series: Wave