Description The small ball is designed for your hamster to run or doing other exercise, to keep your hamster healthy and thin. Made of premium plastic material, safe, durable and wear-resistant, the Hamster Exercise Ball is can be used for a long time. Features -Color:As Shown -Material:Plastic -Size:14.50X14.50X14.50cm/5.70X5.70X5.70in -Safe Material: The Hamster Exercise Ball is made of premium plastic material, durable and wear-resistant, can be used for a long time. -Multi-Holes Design: The hamster exercise ball has multiple ventilation holes in it to increase friction and air circulation, which is safe and breathable, so the pet won't feel hot or find it difficult to breathe for long periods of time. - Lock Design: The Hamster Exercise Ball has a lock design, and is easy to install, easy to use, to provide your hamster a safe playing environment. - Perfect Gift: The practical and interesting Hamster Exercise Ball is a perfect gift for your kids or friends who are keeping a hamster. - Effective and Practical: The small ball is designed for your hamster to run or doing other exercise, to keep your hamster healthy and thin.Package list: 2 Hamster Exercise Balls