Fantastic pair of bib shorts. I am typically a size medium (waist wise), but sized up and glad I did. Thighs are a little snug but get better over time. The best part of the bibs is the chamois - one of the best I've ridden on. No seams, great padding all around.
And heck, it's way cheaper than the castelli non-branded free race bib shorts, as long as you don't mind the cervelo team kit logos... http://www.realcyclist.com/castelli-free-aero-race-bib-short-mens