TRIMACO E-Z Floor Guards work by easily placing a sheet of adhesive plastic film on the bottom of your shoe or boot to avoid tracking dirt and debris into a home or jobsite. Simply STEP, PULL and TEAR. No need to bend over and struggle to apply like traditional shoe covers. Going back outside? Don't bother removing the film, just reapply a new layer as you re-enter the jobsite. Keep your home or jobsite clean with the easy to use and economical E-Z Floor Guards. Starter Kit has shoe pod and one roll of adhesive plastic film. Pod refill supplies up to 250 pairs, fits all sizes.