Boredom Breakers Small Animal Glitter Exercise Ball Suitable for Hamsters and Gerbils. Exercise has never been so glamorous! A fun and safe way for your little pet to explore and exercise. A safe and secure way to let your pet explore and 'stretch their legs'. Made from high quality, recycled, shatter-resistant plastic with added glitter. Easily assembled by clicking the two halves together. Doors unlock by twisting anti-clockwise. Ventillation slits for good air circulation. Made in United Kingdom. Approximate diameter: 7" (18c m) Boredom Breaker Small Animal Glitter Exercise Ball (Pets / Small Animals / Activity)