Stack & Sturdy Construction: This cat toy is made of ultra-strong and tear-resistant PP that stands up to crazy cat scratcher antics, a detachable multi-layer for easy cleanup, with an anti-slip base to prevent product rollover. So it is perfect for one or more cats Spinning Balls Keep Cats Busy: The cat toy stimulates your cat’s senses and hunting instincts, this will increase their sensitivity and will not cause persecution on the furniture at home Keep Away Lonely: This toy provides hours of exercise & self-amusement for health care and elimination of boredom since your cat can play on its own when the master is not at home Play Together: Two or more cats play with this toy together, which will make the cat happier and enhance each other friendship Detachable 4 Level: Multi-level durably turntable interactive cat toy with cute cat head shape on the top level. Fun to entertain your cat for hours UPSKY Cat Toy Roller 4-Level Turntable Cat Toy Balls with Three Colorful Balls and Bell Ball X Turntable Interactive Kitten Fun Mental Physical Exercise Puzzle Toys