This hamster wheel is 100% made by environmentally friendly plastic, non-toxic, resistant to be bitten and wear-resistant with attractive color. Hamster is one kind of small animals that like sports, if you fed the hamster in captivity, it will harm to its health. Adding toy can provide the quantity of motion that the hamster needs so that it is good for its muscle stretch and cardio-pulmonary function and extend its life. Rotate freely, make our cute friend have a more comfortable and pleasant recreational space.