These piano stickers are made of , safe and durable for a long term use. These efficient and practical piano stickers will help you reduce your practice time and carry out more effective practice activities. Features -Color:Multi -Material:PVC -Size:21.00X15.00X0.10cm/8.25X5.89X0.04in - The workmanship of Keyboard Stickers are perfect, and you will have good experience in using them. - These stickers are very convenient and practical piano teaching tools for musical teachers. It is a good present for children or friends who are learning piano. - Helpful for beginners to the basic principles of piano: recognition, score recognition and notation. - It has good visual effect and easy to read. Convenient decal for quick practice and mastering. - Making you learn piano easier; they can be perfect accessories for electronic piano beginners. Easy to install, with detailed instructions for use. Package list: 2 x sets of piano stickers for keys