Learning Piano has never been this easy! The piano is a difficult instrument to learn especially remembering what key is for what notes. Regardless if it's for kids or adults, it can be very challenging. Here is where CRBN's Piano Stickers for Keys come in. These 0.6 in x 1.4 in (15mm x 35mm) stickers are big enough to make it easy for anyone to see them while playing the piano. Due to our double layer coating, your stickers can withstand the constant banging of piano keys and will not fade. It's great for people learning and continuously practicing. It works for pianos and keyboards of all kinds and with the detailed instruction manual, it's no problem installing these stickers. There are 4 options for the number of keys stickers you need 49, 61, 76 and 88 but out stickers can accommodate all of these keys. Remember the stickers only go on the white keys and we are not counting the black keys when trying to figure out which size piano we have. These stickers are made from the highest quality of sticker paper, so although they are extremely durable, removing them will not leave any residue behind.