This is a 42″ Roll static cling Vinyl Clear Polyester with built-in static charge. This material will adhere to a smooth glass surface via a built-in static cling charge, and they work without adhesive. They may be used to create window decals,and can be written on in marker or have adhesive stickers applied directly to them. protects, and laminates auto stickers such as registration, inspection, passes, permits, etc. Crystal-clear and see-through. Thickness is .005 of an inch.