Materials: fluorescent stickers, sun, planets and stars, waterproof and environmentally friendly PVC wall stickers. Not only a nice decoration for the day, but also to light up children's night. Features: The glow stickers are made of special luminescent fluorescent materials, which absorb light for hours in daylight or light and glow in the dark. Fits perfectly on almost any smooth surface without damaging the walls. Note: Stickers absorb more light and glow longer. Due to the printing and plastic packaging, there may be a slight smell, but it is not toxic. We recommend leaving it outside for 1-2 hours before sticking. Make sure the walls are smooth and dust-free before pasting. Creative Decoration: 9 pieces solar system stickers are perfect for decorating children's rooms, a gift to create the perfect starry sky. Small stars can also serve as useful signposts at night, for example on switches, doorknobs, door frames. Stickers including 9 planets + 27 star stickers.