The Champion Sports Official Size Pro Rubber Basketball is an official size game ball for recreational or competitive play. Built with a composition rubber cover, this pro-style basketball has a heavy duty construction that will stand up to frequent use on indoor or outdoor courts. The nylon wound 2-ply butyl bladder offers exceptional air retention, so you can spend more time playing and less time inflating the ball. Composition rubber cover, stand up to frequent use on pavement or indoor floors. Nylon wound 2-ply butyl bladder for maximum air retention. Heavy-duty construction. Official size 7 & weight. Diameter: 29.5" - 30". Orange. Bundle of 2 Basketballs.