GO FRRR DOUBLE PLAY (MEDIUM) (159 ratings) Do you have a dog that LIVES to play fetch? Does your arm get tired throwing the ball to him for hours on end? Try the GO-Frrr! R231.00 Quantity: at R231.00 each Add To Basket The double play pack contains two MEDIUM balls (tennis ball size) and a launcher handle! The MEDIUM GO FRRR is best suited to dogs over 9kg's.