Features: Bring lot of running joy to your little hamster, keep your small pets active and entertained. The running wheel adopts mute technology to reduce noise interferences, so that hamster can enjoy a quiet environment when running. Your pet will like this wheel toy because it will help them break boredom, and also get them exercising to maintain their strength. Enjoy so much fun, helping them build their muscles and making them happy & mentally healthy. Durable plastic enables reliable standing and support while running or walking. Specifications: Material: Plastic Size: Approx.14x9x14cm Color: Blue/ Pink/ Yellow Quantity: 1 Pc Package Includes: 1x Hamster Sport Running Wheel note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.