Thank you for coming to our shop, I hope it is to your satisfaction Item Name: Hamster Toy Usage: Exercise Training Features: Bite Resistant, Silent, Wide Runway Size Details: M: LxW: 20cm x 8cm/7.87" x 3.15" (Approx.) L: LxW: 26cm x 10cm/10.24" x 3.94" (Approx.) Specifications: There are two different sizes for you to choose: M, L Suitable for hamster, guinea-pig, hedgehog, squirrel, chipmunk, golden bear rat and other small animals. What the sports running wheel toy can offer you is that it does not jam and runs more safely, preventing hamsters from pinching their feet during exercise. Stable and anti-rollover make small animals to play safely. It is constructed of plastic material. Not only can the sport wheels toy help small animal to exercise, consume part of their physical strength, help them maintain a good body shape, but also play a role in relieve stress and boredom. Kindly Remind: Due to light and display, there may be slight differences between the picture and the actual color of the product. The color is subject to the goods received. In addition, please allow slight size difference due to manual measurement. High quality, assured choice is guaranteed Package Includes: 1 x Hamster Toy