Bounce 'em, Catch ' em, Fetch 'em, Roll 'em, and Throw 'em, is what you can do with the Powzer Toss 'n Go. A hard rubber ball made to last. Powzer toys encourage interaction between you and your pet. Get up, have fun and play with your dog. Balls are 2.5 inches in diameter....about the same size as a standard tennis ball. We'll choose the color so you'll get a surprise!