Answer Question
I'm 6' 2" and around 175 to 180lbs, and I would recommend and own the X-Large sized Mountain Equipment K7 jacket.
I've tried on the (large) K7 jacket and it was really snug around the waist and way too tight in the arm pits (had to return it). While I could wear a fleece and multiple layers with the large size, it was harder to zip up when a Nalgene bottle was stashed in the inside pocket. But ultimately, the fit under the arm pits were way too tight and uncomfortable for my liking in the large, so I'd go with an X-Large if you're over 6 ft tall and weigh 175lbs or more and want to wear multiple layers underneath.
How can I winterize a 3 season tent?
What are the Best Gaiters for Winter hiking?
What's a good and durable camera for taking photos of your friends skiing?
Do you have any advice on the Best Crampons for winter hiking?
What are the Best Winter Gloves?
What cell phone service has the best coverage in the Adirondacks?
What are the gear warranties and clothing warranties of major outdoor gear brands?
How do you keep a phone battery alive when out in the cold for a whole day?