Funny wheel and balls design for the hamster run, lots of fun for your hamster. free walking in the apartment - The hamster can go on excursions - Ventilation slots. Maté riau sûr: manufactured with high quality materials safe for animals. Relieves boredom and increases activity level. and gives to your pet a fun place to play. Encourages the little hamster to getting healthy exercise in this running track, provides interactive fun for pet and owner. Funny wheel and balls design for hamster run, lots of fun for your hamster.