Wilson NCAA Final Four Indoor/Outdoor Basketball - Brown, Size 6 - 28.5" Composite Pebbled Channels: Composite channels are pebbled instead of smooth, creating a consistent texture over the entire surface of the ball for unparalleled control. Composite Leather: Composite leather provides a consistent texture facilitating better grip and ball control. Deep Channels: Deeper channels between the panels of the ball allow for more grip points and better ball control when dribbling and shooting. Pressure Lock: Inflation retention lining creates longer lasting air retention. Indoor/Outdoor Playing Surface: Built to perform on concrete and hardwood to dominate both indoor and outdoor basketball environments.