I ordered the XL and I am 5' 11", 220 lbs. The waist is very snug and will likely be too tight over layers, and I wear a 36 waist in pants. The length is spot on, if not a little long. There is plenty of room in the seat, but not quite enough to look like MC Hammer pants.
My husband is 6'4 and is a big man. I took a chance and ordered these bibs. I chose the size 2x and the bibs fit him great length wise. Yes, in the belly area (mid section) it was larger and with lots of roominess. My husband said it was fine and he would wear them anyway ...no problem when he wears clothes underneath :) However, the over all quality for the price was great.
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