The OnlyOne unicycle is perfect for children and beginners. It features solid equipment, including a zebra saddle and non-slip plastic pedals. The weight is approximately 5 kg, with a seatpost 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 fixed to the hub via a bottom bracket shaft, and the crank arm length is 127 mm. This unicycle is designed for basic riding, with a wheel size of 20 inches and a maximum permissible weight of approximately 75 kg.