Features: 20″ wheel Eye-catching bright green in color Rational designed according to somatology and movement features Cotterless steel crank Smooth riding wheel bearing Large saddle in unique design for extra comfort & safety Removable poly-nylon guarded rails on the seat Steel fork with chrome plated Full-sized nylon pedals with chromoly spindles Extra wide black bulged-pattern skid proof rubber tire Height adjustable from 32″ to 36″ Rather room saving, just leave it in the corner No manual included but item is easy to assemble. To keep in mind: Since it is not common bicycles, novices should ride unicycles under the instructions or accompany of professionals or tutors for safety. The best place for training is a back deck, preferably made of wood, which is more friendly than concrete, with a handrail. You’ll need to hold onto the handrail while your leg muscles learn to react. If you don’t have a back deck, try a baseball field with a chain-link fence. Pick a grassy area with solid, flat dirt and you can hold onto the fence.