Stay loyal with the Wilson NBA Team Tribute Basketball. The cover features an alternating pattern of the Boston Celt's primary and secondary colours across its surface panels with the team logo displayed prominently on the front cover. The Performance Cover is designed to take on whatever court you choose, built with durable grip for rough surfaces. PERFORMANCE COVER: Outdoor cover designed for grip on rough surfaces TEAM COLORS: Features alternating primary and secondary team colours NBA PRO SEAMS: New channel construction suited to player preference OFFICIAL SIZE: This size 7 (29.5") basketball is the perfect size to honour the entire team Wilson NBA Team Tribute Basketball - Boston Celtics