It is a good accessory for keyboards that are bought to stay on same place, it protects the keyboard from some humidity, fatty fingers and dust. I like it because is a cheap but important piece to maintain the health of your keyboard. It is really elastic so i use it on 76 keys, but i have use it on a 61 keys keyboard. It also has a rope to tie the extra fabric underneath the keyboard and it doesn't fly off. I think that the fabric should be impermeable, so thats a thing to improve, but it is hand washable, so it is a good start. In conclusion, it is something that i would by again, if i need to.