Crazydeal Glow Dark Luminous Fluorescent Stickers Wall Art Useful partical Home Paste Ceiling Deco Decal Attach the enclosed mini two sided stickers. One side and the other side to a clean and smooth surface. At night, turn on your room's lights for the sticker to get "charged". After 5 minutes, turn your lights off. Great gift/prize for kids age 4 years old and up. These are small parts not for children under 3 years old.