Description: Hamster crystal running ball, the overall transparent design, the owner can more intuitively observe the whole process of the hamster baby’s movement. This product is made of high-quality materials, excellent in quality, simple and convenient to assemble, and is a good toy for rats and mice. Feel free to let Shushu go “play”! material: plastic size:10cm in diameter Package contains: 1*hamster toy Note:The size of the product is measured manually when placed horizontally. There may be an error of 1~5cm. Please pay attention and consider this factor when purchasing! All product pictures are taken in kind. Due to the difference in lighting and display, there may be color difference with the real thing. This kind of problem is not a product quality problem. The final color is subject to the actual product.