I bought the Logitech, the case of which must be ballistic nylon, it is very strong. However I then also got the Apple Pro and haven't used the logitech since. It is not backlit, and lacks a few of the keys, but it is so thin and convenient, and protects the screen, and I got a thin leatherish sleeve for the whole thing together. The 3 rare earth magnets are so strong the pro keyboard stays on snug.
My Logitech keyboard is backlit. I'm typing on it right now and the keys are lit. You might want to check that yours is not defective.
38 posted on 01/21/2016 11:39:36 AM PST by Swordmaker
(This tag line is a Microsoft insult free zone... but if the insults to Mac users continue....)