CATS Cats Transfer Sticker / Decal This sticker is a glow-in-the-dark type, and glows in the dark. First, cut out only the illustration part you want to apply with scissors. Then, peel off the clear backing sheet and apply the sticker to where you want it. Finally, peel off the top clear sheet, and only the illustration part will remain on the surface. This is a transfer-type sticker. It is waterproof, so it can withstand some water.