after 1.5 years of use, the darker, rough side dissolves the isavers. I always put this (as in the photo) on the keyboard, that is obviously rub the keys is the covering ab.ärgerlich that while a gray dust is generated, which falls between the keys. if necessary, it could be a solution for new iSaver that lay side with the "i" down on the keyboard, because that is still 100% intact.
