It can be stuck onto any clean, dry, non-textured smooth surfaces: walls, windows, tiles, furniture, mirrors, even your refrigerators. decalmile wall stickers are made of high quality, bright and colourful, easy to peel and stick, removable and waterproof. decalmile rockets planets wall stickers are perfect to decorate baby nursery, kids bedroom, living room, playroom. Come in 8 sheets, sheet size: 21cm x 30cm (8.27" x 11.81")or depending on your preference to DIY. If you're not satisfied with your purchase or have any problems on installation, please feel free to contact us and we will reply and help solve problems within 24 hours.