Functionally, this is a very effective waterproof that will certainly keep out the rain but remain very breathable as well - the lack of clamminess (when compared to many products that are labelled as breathable) is really noticeable when you have this on. Actually, I expect it will perform as well as if not better than many waterproofs sold at twice the price.
In terms of size and features it is loose-fitting (although I am quite lightly-built) and long enough to cover your trouser pockets and crotch. There is some ambiguity in the description about whether velcro or press studs are used but the one I received mainly uses the latter (which is for the better, I think). It's no fashion statement and isn't as closely cut or lightweight as more expensive waterproofs (it's pretty shapeless and with the hood folded away the collar is quite bulky) but as it isn't really intended to act as an insulating layer you would want to wear something underneath it anyway. There are three pockets, one of which is inside the chest and can just fit an OS map, for example.
Regarding the noise (commented on in another review), I wouldn't say it's any noisier than most other waterproofs but as such probably isn't suitable for hunting?