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 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 2-ply butyl bladder for maximum air retention *Heavy-duty construction *Official size 7 and weight *Diameter: 29.5" - 30" *Orange.