SUITABLE FOR ALL PIANO KEYBOARDS: Our sticker includes 52 white and 32 black key stickers, suitable for piano keyboards in sizes of 88, 61, 54, and 49 keys. Piano keyboard stickers can be used to more clearly see and remember them, helping piano beginners accelerate their piano learning. | GOOD FEELING: The piano key stickers are very thin, and you can hardly feel them when you play the piano. The surface of the sticker is smooth, without resistance, and you will not feel any foreign objects during your learning process. | DURABLE MATERIAL: The piano key stickers are printed on transparent stickers, which can withstand continuous impact from the fingers, are always clear and legible, and are waterproof. When the surface of the sticker is dirty, just wipe it with a damp cloth. | HIGH QUALITY MATERIAL: The piano notes stickers does not roll up or peel off, is easy to remove, does not damage the key or leave any sticky residue, and always keeps the piano keyboard clean and tidy. | EASY TO READ: The piano letters are large, clear, and easy to read, making it easy for beginners to see when learning the piano and remembering the position of notes; For piano teachers, it is also a good teaching tool that can help students quickly learn piano keys and notes.