Safe Material: Hamster Exercise Ball Made From Brand New Pc Material, Non-Toxic, Odorless And Long Service Life; It Is Lock Design, Easy To Install And Use. Lightweight And Portable: This Hamster Fitness Ball Is Lightweight, Small In Size And Portable, With A Diameter Of 14/5.51 Inches, Suitable For To Short Hamsters, Mice Or Other Small Animals.Transparent Design: Transparent Hamster Running Ball, When Animals Are Playing In This Transparent Hamster Ball, You Can Observe The Animal'S Every Movement, Which Is Very Interesting And Cute, And Can Provide Interactive Fun For Pets And Pet Owners. Unique Design: The Hollow Design On Both Sides Makes The Running Wheel More Breathable. The Hamster Can Practice The Ball Well. There Are Multiple Ventilation Holes On The Ball, Which Is Safe And Breathable. Your Little Pet Can Stay For A Long Time. Play Inside! After-Sales Service: We Are Committed To Providing High-Quality After-Sales Service. If You Have Any Questions About The Product, Please Contact Us By Email, And We Will Get Back To You Within 24 Hours.