Champion Sports' Rubber Basketballs are affordable and versatile, making them great options for your gym class or rec center. The Performance Series balls have special rubber covers that make them extra durable and easy to grip. They look and feel like leather composite balls, but cost less and can be used outdoors. The 100% butyl bladder won't leak air. Choose a size 7 (men's official size) or a size 6 (women's official size) ball. Each is backed by a two-year warranty. Champion's standard rubber basketballs are perfect for playground use. They feature durable nylon-wound, 2-ply butyl bladders.