Works like you would expect it to.
Runs a little tight thru the chest area. Wish it had a zipper pocket on chest like the regular overlord shirt does. Overall not bad.
Have worn for about a couple months and am happy so far. It does run a bit small to size as others have noted in their reviews.
I had a local seamstress install a zipper from the neck down and this really increases the functionality of the garment; allows one to regulate body heat much better. I do prefer an "Anorak" or hoody garment such as this (instead of a full-zip jacket) and having the zipper is a big plus, similar to the blaze orange upland hoody that Gamehide offers (which I like a lot too).
The construction of the garment with "arms forward" is a big plus and makes motion more natural and effortless.
For size purposes I am 6-ft 4-in and 240 lbs. and have the 2XL size. If wearing anything under this other than a t-shirt I would need a 3XL. There is a noticeable difference between how roomy the blaze orange upland hoody at 2XL and this Marsh Lord wears at 2XL.