Phosphorescent up to 5 hours of time: our Glow-in-the-Dark Sticker is made of fluorescent luminescent material. It must be first charged for a few hours in the light and then be bright up to 5 hours in a row. Night light - this phosphorescent sticker can be used as a soothing and comfortable light when the night falls. Perfect for baby rooms or children's bedrooms, it will avoid using night lights and help children fall asleep. Package contents: 20 x 25 cm phosphorescent sticker + installation guide. Franco-Belgian manufacturing Environmentally friendly and non-toxic: do not worry about the safety of your child, this sticker is made of non-toxic and environmentally friendly material. Easy to apply: no tools or glue required. The sticker comes with adhesive. We provide you with an illustrated installation guide. It can be removed without damaging the walls.