This luminous sticker has multiple elements Phosphorescent wall sticker, The luminescent material is safe, waterproof, tear-resistant and dirt-resistant; it has strong adhesion, is easy to stick and does not fall off easily, and can last for a long time. Leave the sticker under the light or sun for more than 30 minutes. Put it in a dark place to see if it glows. (3) Tear off the sticker and stick it on a smooth, clean and flat surface. (It can emit light for 5-6 hours after absorbing light for 30 minutes) This fluorescent wall sticker is especially suitable for sticking on the wall, ceiling. Decorate a children's room, a girl's room, a kindergarten, a children's hospital, a classroom, a living room, accessories stores, etc. Luminous sticker is ideal for making a surprise. On special days such as Children's Day, birthday parties, baby showers, etc., create a beautiful night sky with your own hands, give your child a special surprise! Note: The data are all manual measurements, please