Hamster Toy Super Wide Runway Silent Running Disc Sports Training Jogging Wheel Guinea Pig Mice Small Animal Exercise Accessories Pet Supplies. Description: 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. Sport wheels toy can help small animal to exercise, consume part of their physical strength, not only play a role in decompression and boredom, but also help them maintain a good body shape. It is constructed of plastic material. 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. Item Name: Hamster Toy Material: Plastic 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.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hamster Toy