Slip-Guard™ Floor Sign: Watch Our For Forklift Trucks. Ensure all areas, in which high forklift traffic is present, are properly marked. For extra adhesion and to ensure the edges stay down try edge sealer MB144 - sold separately. Vinyl sign is over laminated with a protective, non-slip, pebble-textured vinyl surface for added durability. Printed and over laminated to protect the graphics and message from heavy pedestrian traffic. Strong, permanent acrylic adhesive back with peel-off liner.