The 0.1mm model is more transparent than the other transparent model which is a little fuzzier and thicker (I tried 2). Change the typing a bit at first, but you get done quickly. Keeps perfectly the backlight of the shuffle. The only small shift that I found between the 2 keyboards, the shuffle, the F1 through F12 are slightly less high than the bluetooth keyboard, but the cover adapts perfectly to 2 and remains perfectly stable. We feel much more secure against friends and other glasses to fall on the keyboard.
Tip: take in one more, with colors, for friends :-), it is cheaper than 2x the original on the Apple store and more here it is certain that it is a French AZERTY.