The low-noise wheel (near silent) is made of plastic and very easy to clean Material safety: Made of high quality material, non-toxic and tasteless, can use long service life.It's healthy and harmless for your pets. Temporary storage: This is a good temporary storage area where you can keep hamsters when you are ready to clean the hamster nest. And the design of the air outlet, even if the hamster runs indoors, it will not suffocate, so that the hamster can exercise well and can also enhance physical fitness. Provide Interactive Fun :Provided a healthy and safe way for small pet or hamster doing exercise, encourages the small hamster take healthy exercise in this ball, provides interactive fun for the pet gerbil and the his owner. SILENT RUNNING WHEEL: let your pet run freely and provide a good place to rest. It will not affect your siesta or rest at night.