THE TEAM TRIBUTE BOSTON CELTICS BASKETBALL: Stay loyal with the Wilson NBA Team Tribute Basketball. The cover features an alternating pattern of your team’s primary and secondary colors 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 colors NBA PRO SEAMS: New channel construction suited to player preference OFFICIAL SIZE: This size 7 (29.5") basketball is the perfect size to honor the entire team NBA Team Tribute Boston Celtics Basketball