[Right Size] The piano key stickers fit for 88/76/61/54/49-key piano. If the number of your piano keys is not the type above, make sure the size of the sticker is smaller than your piano key. [Clear Printing] The piano stickers are designed with a glossy and eye-catching black and clear printing. The transparent and thin material ensures a comfortable playing experience while maintaining visibility. [Easy Installation] Clear cutting lines make the piano keyboard stickers easy to peel off. Additionally, the adhesive sequence on the sticker is easy to understand and easy to operate. [No Residue] The keyboard stickers can be easily removed without any glue residue after a simply wipe, restoring your piano's surface to its original condition. [Made for Beginners] The piano key labels offer a guided learning journey, aiding both children and adults in swiftly mastering piano notes.