PREMIUM QUALITY: Made of high quality PVC material with double layer coating, these key stickers are laminated to protect the inks from frequent use. Meanwhile, these key note stickers are not easy to get scratches and leave no residue on the piano keys, which you can feel free to use. CLEAR LABLE FOR BEGINNER: With highly-definiton printing, these keyboard stickers are clearly readable, which are great to help beginners find their way around a keyboard. Each label has the note in alphabetical form as well as a little image of it on a music stave, making it easier for beginners to memorize the piano keys. NO RESIDUE ON THE PIANO: Each sticker is coated with high quality adhesive material which will not damage your piano. These removable piano key note stickers can peel off without leaving any kind of residue or glue and are easy to apply, which you can feel comfortable to use. EASY TO APLLY: These piano keyboard stickers are easy to use, which you just need to uncover and stick on the surface of keyboards. Meanwhile, they can be re-apply if you get one wrong, so there should be no worries if you are not really good at sticking them. VERSATILE APPLICATION: These piano key stickers have a wide range of applications, which are suitable for most piano and electronic keyboards, perfect for a full set of 32/76/54/61/88 key pianos. Grerat to use at home, in the school, at class, and so on.