●18" Wheel Unicycle, with strong manganese steel frame, 2-layers tire and adjustable seat, ideal for both beginner and professional to practice riding ●Durable in Use - Extra thick aluminum alloy rim and strong manganese steel frame for long time use. Leakage protection butyl inner tire, Can be used for a long time after full inflation ●30" to 34" Adjustable and detachable seat for users of different height and easy storage. Safe to Ride - Skid proof design outer tire and pedal to prevent slipping. Plastic handle on the seat for beginner to grab onto while riding ●Easy to Assembly - Quick release seat post clamp and a wrench comes with the unicycle for easy installation ●High-quality mute bearing providing noiseless and comfortable riding experience and enables you to concentrate on riding