Material: Plastic Item Dimensions LxWxH: 4.72 x 4.72 x 4.72 inches Made with durable plastic materials. Relieves boredom and increases activity level, providing a fun spot for play Ideal for hamsters or other similar-sized small animals. Encourages healthy exercise in a secure way Makes a great temporary holding area to keep your pet while cleaning their habitat 4.8-inch diameter. Suitable for dwarf hamsters and mice. Fun exercise toy to maintain your pet's alertness and agility. Provides interactive play for both pet and owner Before placing your pet into the plastic ball, ensure it is correctly assembled. To assemble the hamster plastic ball: 1. Align the buckle positions of the two hemispheres, snap them together, and turn slightly clockwise to lock 2. When attaching the top cover, align the four snap positions and turn to the right to secure 3. Place your hamster into the plastic ball and observe playtime on a flat surface