Features: It integrates functions such as running sphere, roller, climbing stair, and inner caves, providing a variety of activity elections. Using special component, the noise during operations are extremely low and will not interfere with the live of pet and owners. Promoting hamster movement, enhancing physical fitness, and helping to maintain health. Consist of environmental friendly and innocuous Component to ensures the security and healths of pet. Detachable styles, convenient for washing and maintenance, maintaining hygiene. Specifications: Color:Two elections Dimension:16×11×17cm/6.3×4.3×6.69in Component:PP+ABS+PVC Package Includes: 1pc Silents Hamster Wheel note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.