... :1, Put one foot on the film, and stamp down to make sure the the plastic part pop-up.2 ... foot passed the knife for about 5cm-10cm.3, Stamp down to the floor quickly, the film will be cut by ... At the same time, the little plastic part will be down to the original place to hold the film.4, Touch ... cost fewer than the traditional shoe cover. automatic shoes cover machine with film,one time use,home use