The OnlyOne unicycle is perfect for children and beginners. It features a solid design, including a zebra saddle and non-slip plastic pedals. The weight is approximately 5 kg, with a seat post length of 300 mm. The rims are made of aluminum, and the front tire size is 20 inches with a tire width of 1.75 inches. The drive unit has cranks connected to the hub via a bottom bracket axle, and the length of the crank arms is 127 mm. This unicycle is designed for basic riding, with a wheel size of 20 inches and a maximum allowable weight of about 75 kg.