Adhesive Backed 1 mil Polyester Dry Erase Laminate For use with dry erase type markers Polyester has a dry-erase coating for longer term dry-erase capabilities Laminate may be written on repeatedly; wipes clean with dry tissue or dry erase cleaning fluid Readily laminates to any smooth sealed surface Make any graphics a dry erase board. Write on/Wipe off capability. For indoor graphics only. Construction: Adhesive: Clear Permanent Acrylic Film: 1.0 mil Clear Polyester Liner: 78 lb paper Gloss Level: 90 (avg.) @ 60° Shelf Life: 1 year from manufactured date when stored in proper conditions 70° F and 50% relative humidity