2 inch x 1 inch to 5 inch x 3.5 inch Simply Peel and Stick! Removable & Reusable! Light up the night with these beautiful butterflies and darting dragonflies. By day, these wall stickers may look like ordinary white decals... but in the dark, each of the 80 elements emits a special glow! To use, expose them to a bright light, then stick them to your wall. Each decal is removable and repositionable, so there's no need to worry about getting them perfect on the first try. By night or in the dark, your room with glow with the soft light of friendly butterflies and dragonflies! Pair with our glow-in-the-dark celestial set for even more fun on ceilings, walls, and other flat surfaces.