At 6'1", 180#, I'm generally a large in bibs. P.I., Craft, Hincapie, you name it. In the Gore's, I'm probably an XL and maybe even an XXL. Not because of the waist, but because of the length of the shoulder straps. When I put them on, my wife looked at me and said "..oh, that CANNOT be comfortable!" Let's just say they rode very high and tight. Even bent over like I would be on the bike, they were cutting off blood flow to the nether regions. Width wise, they were a bit tight, but that would be great to keep up muscle compression on long rides. My recommendation is to look elsewhere, or at least buy a size larger than normal until they add some length to the bib straps.