Was trying to answer mvick's question but it wouldn't let me.A Medium will most likely be too short for you.I'm 6ft, 180lbs, 33inch waist. I just got a medium in today. I can barely fit my arms in it and if I raise my hands above my head it becomes a belly shirt. I wanted a slim spandex type fit but the arms and length are just too small.A large is too big for me from what the sizing chart says but I'm going to exchange for one and hopefully it fits better without having a fat waist.If anyone reading this has 15.5+inch arms you are going to find the medium very uncomfortable from how much the arms have to stretch out.The product is really nice otherwise. It's very soft, super warm, and I like how it's a different material in the venting areas. I'm looking at using it over a baselayer for alpinist stuff.
Updated: the large fits well on my frame. Also, it weighs 430g so about 55g less than I was expecting.