[❤ The hamster wheel brings endless running happiness to your hamster. ❤ Hamster exercise wheel is quiet sturdy and easy to run on. Even if your hamster runs on the race track it can bring you a quiet night. ❤ ANTI-SLIP - With radial stripes design increase friction and avoid your hamster slip and fall also provide a good run-up. ❤ Spin smooth easy to clean. ❤ Size: 7.07"L x 7.07"W x 4.32"H.]