About this item CAT TOYS ROLLER: This tower of track cat ball toy provides hours of exercise & self-amusement for health care and elimination of boredom and pet depression since your cat can play alone when master is not at home 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 a non-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. 2 IN 1 PLAY TOGETHER: Equipped with a mouse toy cat teaser,it is pluggable on the top,or you can take it down to tease the cat,stimulates cat's senses and hunting instincts,keep cats occupied,give them more fun Two or more cats play this toy together, which will make the cat more happy and enhance each other's 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.