When properly applied, a Cookie's decal looks like an etching on your window. Completely reusable because there are no adhesives.
Directions: Clean inside surface of the window. Peel decal from backing. Wet the face of the decal and place it on the clean window surface. Then "squeegee" the moisture out from under the decal using a rigid plastic or hard rubber straight edge. If you wish to move the decal, simply peel it off and reapply it elsewhere, using the same wet application. There's no glue, so there's no mess.