Usage Tips:Features: 1. NO GLUE, NO NEED STICK: The piano note strip is made of silicone, and in series, so there is no need to stick to the keys like piano stickers. Easy-to-install, Easy-to-remove, without leaving any residue, and keeping your keyboard clean and tidy. 2. DOUBLE STAFF DISPLAY: Showing the note of each key with double staff, which helps to find the corresponding key from the keyboard faster, because all piano scores use the treble and bass staff structure. 3. BEGINNER FRIENDLY: You don't need to know the names of the keys or where the Middle C is, you just need to put the note strips on the piano keyboard. Done in seconds 4. REMOVE ANY TIME, REUSE ANY TIME: When you start to know the keys and become familiar with the octave rule, you can remove the note strips from the keyboard. Of course, if you feel that you are not skilled enough, you can put it back at any time. 5. 88 KEY FULL-SIZE: Fits standard sized 88-key pianos. Perfect for grand pianos, upright pianos, 88-key digital pianos and keyboards. Specification: Material: Silicone Product Color: Black & White, Colorful Package Size: 16.5 x 8 x 1.5cm Package Weight: 120g Package Included: 1 x Piano Notes Guide