The clear transparent piano key stickers help beginners to pass the introductory course quickly. Characteristics: Perfect for Kids: They keep an eye on the sheet music as you play, a perfect product for young kids just starting out to learn to play the piano. Durable: The stickers are printed on transparent material and coated with a durable adhesive that will not damage your keyboard. Have fun and learning: It makes it easier to learn the notes and speeds up the saving of the keys, makes learning the piano easier and more fun, especially for beginners and children. Easy Installation: Includes a user guide with simple instructions that will get you up and running in minutes. Applicable keys: piano, electronic organ, hand piano with 37/49/54/61 keys Material: Transparent PVC How to use: 1. Use scissors to cut the stickers along the edges one at a time 2. Following the instructions, tear off the stickers and locate the appropriate keys 3. Stick some of the sticker along the buttons and gently smooth it over.