Since this wooden bike has no pedals or training wheels, kids have to use their legs for balance and movement. This exercise encourages quicker learning and makes the transition to a bicycle with pedals much easier because they've already honed their motor skills. Frame is made of solid birch plywood. Cross country style rubber tires (12½ x 2¼in.) with inner tubes for a smoother ride. Soft padded synthetic leather seat keeps tiny tushies happy. Easy assembly kit includes wrench. Adjustable seat height from 34 to 42cm. Steer stop for more security.