This glow-in-the-dark adhesive sticker set from YAY!™ is great for decorating ceilings and walls. Includes 50 stick-on glow star-shaped stamps in an assortment of sizes. Each star has an adhesive backing thatâ€™s easy to place. Each star sticker is made with nontoxic plastic. Stick the plastic cosmic shapes on to a surface, expose them to light, and they will glow in the dark.