It is a very practical piano teaching tool that will bring you a good experience. The labels are especially designed to keep your eyes on the notes while you play. It makes learning the notes easy and speeds up memorization of the . Features -Color: Assorted color. -Material: PVC. -Size: About 19.00X13.80X0.10cm/7.47X5.42X0.04inch. -Adopted self-adhesive material, featuring waterproof, anti-sweat, durable for a long term use. -The reasonable design makes most kinds of piano, very practical for using. -This piano keyboard sticker is easy to install and remove without residue left. -It is very thin and can be applied to the keyboard to minimize the impact on sound quality. -Its main function is to help beginners piano faster, so as to develop good piano playing habits for beginners. Package list: 2 x piano stickers