1. Extensive Training Anywhere: The hamster exercise ball toy ensures your pet has ample space to run with its 7 inch diameter and wide rolling range. Say goodbye to limited exercise areas and give your pet the freedom to train anytime, anywhere. 2. Breathable and Comfortable: This hamster exercise ball toy features multiple ventilation holes and an air hole design that creates an airflow channel, solving the issue of stuffiness and keeping your pet cool and cozy. 3. Happiness Booster: This hamster exercise ball toy helps your furry friend relieve boredom, gain unconscious enjoyment, exercise their body, and stay happy. 4. Durable and Reliable: Made from anti drop PP material, this hamster exercise ball is both wear resistant and odor . Its strength ensures durability and reliability, making it a trustworthy choice for your furry friend's exercise and exploration needs.