SILICONE TEXTUREThis product is made of soft, elastic, waterproof and durable silicone, and connects each label in series so that it is not necessary to stick to the buttons such as piano stickers. It can be easy to install and remove without leaving any residue and keep your keyboard clean and tidy. BEGINNER FRIENDLYShowing the note of each key with dual-staff, uses a special label to mark the middle c and 20% larger than normal characters, which helps you to find the corresponding key from the keyboard faster. This piano rake presents the key notes in a visual way, helping beginners and kids to start playing and practicing directly when not yet familiar with the keys. EASY INSTALLATIONIt contains three silicone strips for low, medium and high notes, which can be used straight out of the box. Each note strip is marked with the corresponding text in the upper left corner, you just need to place them in the order of low, middle and high from left to right. When you don't need to use it, you can easily take it off. The whole process does not require the help of any glue or tools. NO HINDER TO PLAYThe highly soft silicone texture won't bother your fingers while playing. It is placed away from where the fingers play. Give you a wonderful piano learning experience. 88-KEY STANDARD SIZEThe size of the piano note strips is customized to fit all types of standard 88-key pianos. Some non-standard size 61/54/49/37-key keyboard instruments may not fit properly. Please confirm the size of your keyboard before purchasing, especially the width of the gap between the top of the black keys and the keyboard shell, which must be wider than 2.4mm (0.1 inches).