This is basically two nicely designed stickers that you can use to pimp your Kindle Paperwhite by sticking them to the front and back of the Kindle. They can be a pain to apply, in the same way that screen protectors are a pain to apply, but once they're on, they do improve the appearance of your Kindle enough that you can feel a sense of smugness as you bust it out in the presence of other people with Kindles that aren't wearing skins.
I got this product as part of an Amazon deal to buy two Kindle accessories and get one for half price. The other accessory was a Kindle case which unfortunately rendered the back skin rather pointless as you can't see it any more - this might seem blindingly obvious to some but I figured it's worth mentioning to those to those who also plan to get (or already have) a protective case.
The price (full price £15 at time of purchase) feels rather steep for something which is essentially two glorified stickers (even if they are a bit sturdier than your average sticker), and I'm not sure I would purchase something like this again unless they were part of another special offer.