DIY stair tile stickers, self-adhesive materials, easy to use, just peel and stick. You can mix and match to paste. Compact and versatile, it is suitable for stairs, kitchen backsplashes, floors, bathrooms, refrigerators, glass windows, etc. The stair sticker is peeled off and stuck on without leaving any residue. The material is PVC, which is environmentally friendly, durable, waterproof and easy to clean. Keep your wall stairs neat and tidy. Develop your child's hands-on ability and patience - improve their understanding of color and aesthetics. Please note: Children cannot be operated alone and must be accompanied by their parents. Each set includes 15 small pieces, which can accommodate 6-7 steps. If your house has more than 7 steps, I suggest you buy 2 sets.