Spalding Hardwood Series Ball Boscel pairs a deep-groove rubber knurled surface with Nitroflate™ injection for improved inflation retention and consistent grip. Designed to official size 7 (75 cm) specifications, it features engraved NBA and Boston Celtics logos for team recognition. Key attributes: Black | Gold | Rubber | Enhanced inflation retention (Nitroflate™) | Official size 75 cm | Improved grip from deep-groove knurling | Engraved team and league logos | Official size 7 | Deep groove knurled surface | Engraved NBA and Boston Celtics logos | Black and gold accent detailing | Dimensions & fit: Diameter: 75 cm | Official size 7 (standard basketball sizing) | Composition & care: Rubber