Reliable Material: The wall stickers are made of high quality self-adhesive matte PVC, safe and non-toxic, easy to peel and stick, durable and waterproof. Easy to Use: Peel and stick and stick anywhere you want without leaving residue. It can be applied to most smooth, flat, dry and clean surfaces, very easy to apply or remove. Bedroom, playroom, classroom and anywhere else. No painting required, brightens up your room and is a unique gift idea. Tips: It is normal to have a little taste when opening the package, just spread the product in a ventilated place and let it dry for a few hours to eliminate the smell.