I went with the XL, I'm 5'11 and 185 pounds. I'm just your regular guy, no weightlifter butt, legs, arms, and so on. The XL fits me just right, the legs length just barley touches the floor when I'm barefooted. The arms length is just right too. You can wear one pair of long-johns along with two sweat-shirts on top and two pair of long-johns and one sweatpants underneath them. That's about the max, they start getting a little tight in the butt when you squat like a baseball catcher. If you're not going to squat that low you might have room to add more underneath. Elastic is built into the back to draw the middle in for the lighter guys ( 120-170 pounds.) There's also a belt built in that I don't use since it makes them feel to snug, it's for the skinny guys. They are pretty much like insulated coveralls, you could always wear a oversize jacket or rain-suit over them. I bought them to wear in-doors to help save on the heat and electric, they are closer to being slippery-smooth on the outside. If you are over 6'1 or if you have a large butt, chubby legs, chubby arms or look like a weightlifter I would go with the XXL. You can always have it altered. The two front pockets are large enough to place your un-gloved hands in and they will hold your cellphone, they're not totally worthless like some reviews are saying. The zippers at the bottom of the legs are appr 19 inches in length and like with any pants when you sit or squat the legs will raise up. If you are going to abuse this suit I would go with the insulated coveralls, those are better at taking abuse. OK, I hope that helps someone out there.
Rating:
[5 of 5 Stars!]