Brand: antiai

【Mini Size for Your Pets】 This is S size for small furry animals, about 6.1x3.74x7 inch(15.5x9.5x18 cm). Highly recommended for dwarf hamsters, small gerbil, mice, and other similar-sized pets, fits for them when run without bending their backs. 【NON-TOXIC MATERIAL】Made of high quality wood, which are durable and safe chew out. It not only serves as exercise toy preferred for small pet sports activities but also as chew toy, offers excellent pet teeth grinding effects. 【Noiseless】 Designed by wooden with a very low noise level,and dual ball bearings, so can quiet keep it on spinning smoothly, even your little friends working out on the hamster exercise wheel in the night time, you still have a sweet sleep.