Transparent Visibility: The hamster jogging exercise ball adopts a transparent design, visually creating a spacious and bright playing environment for pets. The hamster ball has a diameter of 14.5 cm/5.71 inches and is suitable for small to medium-sized rodents. Safe Single-Sided Opening: The single-sided opening button cover ensures that your hamster can enter easily and stay safe. The center hood secures with snap points to prevent accidental opening, providing peace of mind even during fast runs. Environmentally Friendly Material: The hamster ball is made of non-toxic and odorless plastic, ensuring a safe and comfortable environment for your hamster. Lightweight and durable, it can provide a lasting and pleasant space for baby hamsters. Wide Application: The dwarf hamster ball can run on the floor, can be hung inside or outside the cage, and can be supported and used independently. It is a very suitable toy for hamster entertainment, relieving pet boredom and protecting their health. Optimal Ventilation: The pet wheel has specially designed vents that promote continuous air circulation to keep your hamster cool and comfortable while playing. The design also avoids the risk of your little hamster's feet getting stuck.