[Sturdy Construction]: 18" Wheel Unicycle features strong manganese steel frame, and extra thick aluminum alloy rim to support user with height from 53" to 65"; Ideal for both beginners and professionals, great for practicing riding and improve balance [Durable in Use]: Dual-layers tire: rubber outer layer and butyl inner layer for leakage protection, 1 inflation for using about 100 days, focusing on practice without worrying second inflation [Adjustable Height & Detachable Saddle]: Height range from 30" to 34", perfectly fits users of different height; Detachable saddle for space-saving storage [Safe & Comfortable to Ride]: Skid proof design outer tire and pedal to prevent slipping; Plastic handle on the seat for beginner to grab onto while riding; Mute Bearing provides noiseless & comfortable riding experience [Easy to Assembly]: Quick release seat post clamp and a wrench included, finishes installation in minutes and get ready for an exciting riding moment