FEATURES: Performance Cover : Outdoor cover designed for optimal grip on rough surfaces Air Retention Liner : Helps maintain a consistent level of air for long-lasting play NBA(R) Pro Seams : New channel construction is suited to player preference BASKETBALL SIZING CHART: 29.5" (size 7) ball suitable for men and boys 12 and older 28.5" (size 6) ball suitable for women and girls 9 and older and boys ages 9-12 27.5" (size 5) ball suitable for ages 9 and under Note: The above ranges are not standard across all leagues. Be sure to check with your local league to ensure applicable sizing.