DescriptionThis product is a thumb piano sticker, suitable for beginnersto practice. This is a very professional training tool, it can help youmaster the skills faster and become familiar with the keys. The productis suitable for using.Features-Color: As Shown -Material: PVC -Size: 11.00X7.50X0.20cm/4.32X2.95X0.08in -Note: It comes with 17-tone and 21-tone stickers. -Lightweight and practical, you will hardly feel them when you play the piano. Printing is clear and colorful. -The surface of the sticker is smooth, safe and durable, and has an excellent texture. Easy to practice and master quickly. -The stickers are perfectly matched with the keyboard and are clear and easy to read, making thumb piano learning easier. -The bright sticker appearance can help you easily recognize and remember. Good visual effect and easy to read. -You can buy this efficient and practical thumb piano sticker at an affordable price. The product is helpful to use.