- Decal mile height chart wall decals are perfect to decorate children room, living room, playroom, school, classroom, dormitory. - Decal mile wall stickers are made of high quality, easy to peel and stick, removable and waterproof. Adhesive back can be paste easily on the wall. Waterproof and oil- proof, durable to use. - You can mark on any height easily after sticking. - Children and teenagers can measure themselves safely and quickly. - Before placing on any surface, clean & make it smooth first then remove back cover of sticker, paste on the wall. - This decal can not stick on rough surface of glass and wall. Please make sure your wall is clean and smooth. - It can be stuck onto any clean, dry, non-textured smooth surfaces: walls, windows, tiles, furniture, mirrors, even your refrigerators. - The ruler on this stickers can mark centimeter growth of your kids. You will not miss any period of your child.- Elephant theme - Baby grow happy - Giraffe - To grow taller