Size: 15cm Absolutely low-noise Made of untreated natural wood Safe thanks to closed rung gangway For safe installation in the cage or outdoor enclosure Product Description Color: beige | Size: 15cm 15cm For the very little ones, such as B. Striped or dwarf hamsters Recommends one size larger to avoid damage to the hamster's back. Our knowledge for your animal With more than forty years of experience in pet supplies and a wide range of 8,000 items, we deliver a wide variety of products to animal lovers all over the world with great dedication and competence. Bogie Wheel balance bike from the optimal fitness equipment for your hamsterThe Bogie Wheel balance bike from supports the natural drive and is therefore the ideal fitness device for your hamster. It consists of completely untreated natural wood and is free from pesticides or other poisons. Due to the closed rung gangway, your hamster can follow his urge to run without any risk of injury. The impeller runs very quietly, so that no squeaking drives the residents crazy. The Bogie Wheel is particularly recommended for safe installation in a cage or outdoor enclosure. It is completely normal behavior that the hamster urinates into the running wheel while running, which suggests that the hamster is happy to run. The urine can penetrate the untreated natural wood, which can permanently lead to a penetrating odor. To prevent this, we recommend treating the gangway with clear varnish beforehand. This prevents urine from entering and is completely harmless to the animal.