These bibs are a bit tighter fitting than Bontrager Velocis (MED) or Castelli Free Aero Race 4 (LRG) bibs and the chamois is more comfortable as well. It took a few times using these bibs to get used to them but once I did I began to like them more. They are cut a bit longer than Bontrager which I like. I like the Bontragers but on long rides they tend to chafe me on the inner thigh crease. The Castellis chamois in not as comfortable on longer rides. Im splitting hairs on the comparison, as they are all good bib shorts, but if I could only pick only one, Id pick the Pearls. Im 5-11, 165-170lbs and I wear the Mediums.
If it wasn't comfortable I wouldn't wear it. Keeps me warm on 50 degree days. Knock's the wind down as advertised. Quality zipper, good rear pocket storage. I would definitely buy this item again.
Bib tights work well in my N. California climate for most winter riding (even colder fallspring mornings), but I wanted something a bit warmer than my unlined Pearl Izumi knickers for truly cold winter days. The addition of fleece make these much warmer, however, the fit on the P.R.O.'s is a bit tighter and with a thin layer of fleece, they fit much tighter than my non-P.R.O.'s in the same size. I cannot go up in size because they become too long. They suit their purpose and they look great, but just understand that the P.R.O. line is snug.