[The water bottle is clear and you can easily see the water level. 2.7 oz and 4.2 oz available "The support of bottle is steady and wont shake which enables you to take it apart and change water easily" 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 With radial stripes design increase friction and avoid your hamster slip and fall also provide a good run-up Ideal water bottle for small pets like hamsters mice gerbils. Suitable for cages glass tank glass aquarium or terrarium]
