One thing to note is that it sticks to the back cover with a peel off strip. This is a positive in that it keeps the A5 nice and slender by not coming around the edges, but a negative in that it may not offer much protection to the edges of the phone if dropped. I prefer it though, as most covers usually make beautiful phones awfully bulky and ugly.
The window let's you answer calls and read texts without opening the cover -a neat feature in itself. The texture of the faux leather feels good in the hand and I can see it standing up to average use and abuse reasonably well, though I've only had mine a few days.