Description: - Made of high quality plastic material, for your pet safety. - Helps your hamster exercise more and develop agility. - Widened and thickened base provides reliable and stable mount for the exercise wheel. - It not only serves as exercise toy preferred for small pet sports activities but also a nice decoration. - The wheel is silent, when pets play with this wheel, it will not disturb you. Specification: - Material: Plastic - Size(DiameterxHeight): 18x12cm/7.09x4.72inch - Color: White/Purple/Blue Package Includes: 1 Piece Hamster Exercise Wheel Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!