Jempet Hamster Silent Running ruedas de ejercicio, hecho de maderaSafe and Sturdy StructureMade of quality wood material, which is safe and comfortable for your pets. Widened and thickened wood base greatly avoids reversal through providing reliable and stable mount for the exercise wheel. Fine WorkmanshipA safety stand and the closed back prevent your pet from getting stuck, while the new smooth running surface design greatly reduces the risk of injury. Multiple FunctionIt's not only serve as playing toys, but also