Feature: 1. The sticker can be peeled off at any time, there will be no glue on the keys, no damage to the keys and easy to clean. 2. There are numbers and musical notes on a single sticker, which can help you install it quickly and is easy to operate. 3. Transparent PVC material, and coated with adhesive material, waterproof and oil-proof is not easy to fall off. 4. The sticker is very light and thin, looks glossy and has no resistance, and hardly feels heavy when playing the piano. 5. The letters and numbers on the stickers are large and clear, suitable for beginners to recognize and remember notes. Specification: Item Type: Piano Key Sticker Material: Transparent PVC Applicable Piano: 37/49/61/88 keys piano Package List: 1 x Piano Key Sticker 1 x Black Key Sticker