Alpha Industries Men's Slim Fit N-3B Parka Jacket - Lightweight Waterproof Winter Coat for Cold Weather, Outdoor Activities & Urban Style

Firstly, I'm 6'5' and around 200 lbs, 42 in chest, and wear a 16.5/ 36-37 dress shirt. I picked up a large at first, but it was massive around the chest and waist which is OK if you plan on wearing 2 or 3 layers underneath, but I expected something different from a coat marketed as 'slim-fit'. I should also note that the first one I purchased was the sage green color and it looked pretty awful in person.I returned the large (which wasn't purchased from amazon, but directly from AI) and ordered a medium in maroon from Amazon, which turned out to be exactly what I was looking for. It fits snug on the waist and chest resulting in a nice silhouette, reaches halfway down my backside, and I was very happy to see that the sleeves were long enough even in medium. It keeps me very warm in frigid temperatures (I've only been down to 15 degrees farenheit, but was fine with just a t-shirt under) and is very water repellent, if not waterproof. I really enjoy the maroon color which is a deep red in person; obviously, based on the composition of the coat, the material has a sheen to it. This looked pretty bad with the green color that I had before (like a trash bag), but not with the maroon colorway.Something interesting to note is that this coat doesn't have traditional seams at the shoulder, rather the seams run through the chest and upper back. There is an elastic cuff on the interior of the sleeve at the wrist to keep the wind out, as well as the front placket to keep wind out from the zipper.TL;DR it is a very warm, comfortable, and stylish coat. If you're looking for a more fashionable fit, go for a size down. If not, just go true to size. Maroon looks great, sage doesn't.