FLOATING SLINGSHOT HIGH BOUNCE BALL DOG TOY - PRO BALL GO-FRR - USA Small (2-1/8") - For Dogs up to 20lbs Medium (2-1/2") - Tennis Ball Size Large (2-7/8") - Baseball Size Chosen #1 Fetch Ball by Your Dog Magazine, Tufts University School of Veterinary Medicine "This was by far the most popular toy we tested. The concept is simple... dogs leaped and chased with joyous abandon! The toy was never idle!" --Your Dog Magazine