Model: 20-inch tire (ø 51 cm), frame chrome. OnlyOne Unicycle Indoor - riding fun for the gym. The OnlyOne Unicycle Indoor is a beginner model for all novice riders. OnlyOne is the entry-level brand of the unicycle specialist QU-AX. It offers robust vehicles with good handling for initial riding attempts. Thanks to its sturdy construction and easy adjustability, the OnlyOne unicycles are particularly well-suited for group use. Whether in school, a recreation center, or a club – with just a few adjustments, the unicycle can be tailored to any rider. Initially with assistance and after the first wobbly attempts, children eagerly try to master the artistic vehicle on their own. To ensure that practice can take place in the gym without leaving marks, the indoor unicycles are equipped with white, non-marking tires. The pedals with rounded edges also protect the gym floor – they leave no dents or scratches when dismounting quickly or setting the unicycle down. Additional details about the OnlyOne unicycles: Height adjustment: aluminum quick-release, seat post: ribbed (twist-proof) 30x2.5 cm, fork: steel, white, 5 cm thick gym tires (1.95 inches), max. tire pressure: 4.6 bar, fork color: white (16 inches) or chrome powder-coated (20 inches), 28/36 spokes (16/20 inches). Application area: beginners. Usage area: indoor. Target group: children. Rim material: aluminum. Tire type: air tire. Tire material: rubber. Tire diameter: 20 inches. Fork: Unicrowm. Quick-release: aluminum. Weight: 5.7 kg. Max. load capacity: 60 kg. Minimum inseam: approx. 55 cm.