Features: 100% brand new and high quality. Made of high quality that is eco-friendly, non-, safe and durable to use. Superior running surface is safe and comfortable for your furry friend's feet. Run-up texture design is easier for running, also provides good skid resistance. Suitable for hamsters, gerbils, and other small animals, keep them and active. Specifications: Item: Pet Sport Jogging Wheel Color: Green, Yellow, Blue, Pink Material: Diameter: 12cm Package Content: 1pc * Pet Sport Jogging Wheel Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.