My 7 1/2 and 6 year old daughters are learning how to play the piano, and I was looking around for some keyboard stickers to help them learn the names of the piano keys. When I was younger, my mom used circular adhesive labels that left sticky residue on our piano keys as they wore off. So, when I found these key stickers (and for so cheap! - $[...]) I ordered them right away,
The product description doesn't provide a lot of information, but the package contains a sheet with 8 sets of key stickers. Rather than use them all at once, we put a set each on the two octaves centered on middle C. I noticed right off that the key stickers had enough stick to stay on the keys during normal playing but could be removed without too much effort and replaced on the sticker sheet.
Now, after about 4 months of intermittent use, I noticed that the printing had begun to wear off the stickers. I suppose it was inevitable and not too surprised. I was also glad I hadn't put all the stickers out at once. And for $[...], I don't mind getting another package in another year or two when I run out. Definitely a good value for the money!