4 Corner Images - Black & White Celtic Knot - Vinyl Stained Glass Film, Static Cling Window Decal Clear static-cling vinyl decal effortlessly attaches to glass without the need for any adhesive. Advanced UV protection insures material will not discolor or damage glass. Vinyl decal material and ink are safe for outdoor or indoor use. Simple to remove, the vinyl decals can be easily reapplied without the loss of static cling. Many standard sizes are available. No additional charge for custom sizes.