These pimple balls in a pack of 4 roll all over the place. Your cat must always be on the move here, as the balls change direction unpredictably. Your cat's hunting and play instincts will be awakened in equal measure! The colourful pimple balls offer your cat play and sport in one. Please note: As with any other product, you should supervise your pet when playing with this toy. Please check the product regularly for damage and replace the toy if it is defective or if parts are lost, otherwise injury to the animal cannot be ruled out.