Supplied In A Pack Of 4 Rubber Dog Balls; Fantastic Value Floating Dog Balls are Perfect For Throwing Into Water As They Float For Your Dog To Fetch; No More Sinking Dog Balls! Each ball measures approx. 58-60mm 4 Bright Attractive Coloured Rubber Dog Balls Are Supplied - Yellow, Green, Red and Blue Dog Balls Fit Comfortably Into Dog Ball Launchers And Flickers for added hours of fun for your pup. Dog Balls Rubber - Manufactured From Rubber Meaning They Also Bounce Great!