Wilson NBA Genuine Indoor/Outdoor Basketball - Brown, Size 6 - 28.5inch Pure tactile feel: professional-grade touch and durability; elastic structure: consistent elasticity every time Air Retention: Inflatable retention lining creates longer-lasting air retention NBA Professional Seam: A new channel structure that meets athletes' preferences NBA Official: Wilson is the official basketball of the NBA. This ball features the official NBA brand logo and the iconic Wilson lettering.