① Insert a small wrench into the wheel gap and gently tilt it up 2 Tilt the wheel and put it away for use when needed ③ Plug the wheel pit with the equipped small soft plug and turn it into a flat bottom ① Single and double wheel shoes can be freely retracted through the safety button 2 Rear wheel protrusion into pulley rampage shoes ③ The rear wheel is put away the slide cover to cover the sand into ordinary sports shoes