wheel small running pet hamster pet toy sports toy cute hamster keep running wheel toy pet hamster exercise sports roller

features:.round corner design to prevent accidental injury..colorful wood board material, beautiful and exquisite..fits for hamster, guinea pig, chinchilla etc..specifications:.material: wood board.diameter:.(s)14.5cm/5.71 weight: 200g.(m)17cm/6.69 weight: 220g.(l)19cm/7.48 weight: 250g.(xl)21cm/8.27 weight: 300g.color: colorful.notes:.1. due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. thank you.2. pl