Our Mega Run-about ball measures 13-inch in diameter and is the biggest ball available anywhere. Now provide larger pets with the freedom to exercise. Bigger pets can now enjoy the world around them inside these colorful, over-sized exercise balls. It's an excellent source of exercise for pet rats and chinchillas. The Mega Run-about ball also fits perfectly onto Kaytee Hamtrac for the safest and most controlled exercise environment.

• Encourage healthy exercise in a secure and safe way
• Makes a great temporary holding area to keep your furry friend while you clean their home
• 13-Inch diameter
• For pet rats and chinchillas
• Fits perfectly with the Hamtrac raceway
• Not intended for ferrets, guinea pigs, and rabbits
• Provides interactive fun for the pet and the pet owner
• For pet rats, and chinchillas