Size is comparable with shirt size. If you fit a 4XL shirt, then you fit the 4XL Jacket. In addition, the material is not quite star, but it expands a bit. The material itself keeps you warm. The Chris Kindl market at about 5 degrees and rain (with umbrella) about 1 hour. While she has already survived. Water-repellent, it is, as far as I could tell.
The inside pocket is somewhat unexpected way up.
In any case, absolutely happy with it and it can only recommend.