The package you will receive includes 9pcs planet wall stickers. All of them glow in the dark after absorbing light energy in the daytime. The glowing planet wall decals create a fun and lovely atmosphere. They help your kids learn more about the solar system and no longer be afraid of the dark. The self-adhesive wall stickers are easy to stick or remove. You can design and stick them yourself on any flat, clean, non-textured surface. The wall stickers will never damage your wall when removed or repositioned. The creative glow in the dark wall decor seems like magic, the unique powder absorbs light energy and then releases in the dark. The brightness of the decal depends on the light absorbed of course. The solar system decals include Sun, Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury. They are made of environmentally friendly and waterproof PVC which is harmless to human body, it is a perfect gift for your children. Product Specifications Material: PVC Weight: 150g