The Snorkel Parka is extremely warm. I wouldn't say that it's as warm as a thick down Canada Goose jacket though. But that's part of its selling point for many guys. Canada Goose jackets are heavy as hell and extremely hot. They're the warmest jacket that I've ever worn. The only issue was that they were overkill for most days in NYC, and I'd be roasting whenever I was on the subway or walking around indoors. Forget about hanging it somewhere in a bar or restaurant - it was like trying to stash a small child. If you're somewhere much colder than NYC, then the Snorkel Parka's usefulness will largely depend on your lifestyle. For regular commuting and metro living, it does an excellent job (outside of looking rad). It's military-spec and designed to hold up in very cold temperatures. If you spend a lot of times outdoors and need something for hiking or long activities, then you're probably better off with a thick down-filled parka. For sizing, going TTS should absolutely give you enough room for a very thick sweater underneath. I take a 41 jacket and can still wear the 40 Snorkel over a suit without being scrunched. We're down to the last few units of the Snorkel Parka and it is officially a closed edition. Spiewak shuttered their USA production of this piece, and it will never be made again. Last of a dying breed! Great! Perfect EPLA look. The jeans are the Grey Selvedge Wilshires. We're sold through most sizes at the moment, but restocking in about 3 weeks. I'd say the 30 Driggs is going to be the only size that works in the waist for you. The Driggs leg is pretty slim, so it may be a bit tight in the thigh if that's typically an issue for you. It's the slimmest shape that we offer. You may be better off with a Walt 30 and then just tapering the legs after the knee if you like a sharper fit there. I'd say that they're pretty balanced between chest and shoulder. They're not as cut in around the waist as a sportcoat though, in keeping with the French work jacket shape. Go with the Medium if the small has a chance of being too small in the chest. If the shoulders are a touch big, I don't think that it will be a real issue - it's meant to drape at the shoulders anyway and the enzyme washed canvas will mold to you. Yes sir! About 1.5 weeks out on that.