Material: Plastic Target species: hedgehog, guinea pig, rat, mouse, cat, squirrel, degus, rodent, gerbil, hamster, chinchilla High quality materialThe hamster ball is made of new plastic material, non-toxic and tasteless, can have a long service life, is environmentally friendly and does not harm the animal. DIY Combination ToyThis small hamster ball can be connected with external tubes and extended space for small animals, allowing you to create combinations to increase pets' activity rangeYou can also combine this ball with a train to make the ball roll on the train. Easy to InstallThe pet rodent mouse jogging ball has an interlocking design, can be molded with slight pressure, easy to install. Please confirm the pet's size before installationand select the appropriate racing ball for your hamster. HealthyThis hamster exercise wheel provides a healthy and safe way for small pets or hamsters to exercise, relieves boredom and increases activity levels, giving your pet a fun place to play. Breathable and ComfortableThis hamster ball is more stable and a good size for hamsters. The hollow design on both sides of the impeller makes the impeller more breathable. The ball has multiple ventilation holessafe and breathable, and your small pets can play in it for a long time!