The Cats Wheel provides great fun and a great activity to your cat. It helps keep your cat a good physical and mental condition. The wheel provides entertainment and health。 Approximate Dimensions: (inches) Wheel diameter: 36.2 Width of the wheel: 12.3， This is a cat exercise equiment,it needs practice to use it proficiently,just like a child riding a bicycle,it takes a long time to practice to become proficient.