Features:1 STURDY AND STACKABLE CONSTRUCTION - This cat toy is make of ultra-strong, tear-resistant polypropylene that resists crazy cat scratchers, a removable multi-layer for easy cleaning, with a non-slip base to prevent product from rolling THISrefore, it is perfect for 1 or more cats 2 Rotating Balls Keep Cats Busy - THIS cat toy stimulates your cat's senses and hunting instincts, this will increase THISir sensitivity and will not cause chasing in home furnishings 3 Stay Away Al 1: ??This toy provides hours of exercise and fun for health care and elimination of pet boredom and depression, as your cat can play al1 when THIS is not at home 4 Play TogeTHISr: Two or more cats play togeTHISr with this toy, which will make THIS cat more happy and improve friendship 5 4 Detachable Tiers - Interactive multi-tier cat toy shaped like a cat's head on THIS upper tier Fun to entertain your cat for hours DescRIPStion:This cat toy is make of ultra-strong, tear-resistant polypropylene that resists crazy cat scratchers, a removable multi-layer for easy cleaning, with a non-slip base to prevent product from rolling THISrefore, it is perfect for 1 or more cats Specifications:Material: PPSize: