"Slippery When Wet" Anti Slip Adhesive Floor Sign by SmartSign | 6" x 24" DURABLE VINYL. Made from 18 mil thick non-skid vinyl with a pebbled finish. The textured surface helps prevent slips and skids. They last over 2 years outside. EASY TO INSTALL. Vinyl label have aggressive adhesive backing and can be used indoors and outdoors, but are not suitable for textured floors. PROMOTE SAFETY.Labels speak volumes about your commitment to everybodys well-being by promoting safety.