Practice, practice, practice with the Spalding Miami Heat NBA basketball. Made of rubber, its sturdy and perfect to use on an outdoor court. This 29.5" official-size basketball has 8 ribs that give you a secure grip. It has an inflatable rubber bladder, so you can fill it up to get just the right bounce and use in all types of weather. It"s NBA certified and available in assorted colors with team logos. Ages 12 and up. Wipes clean with a damp cloth.