I held off getting any type of thermal bib for several years after moving to the Tampa Bay Area. This year I decided it was time. These bibs are perfect for our winter climate. I've worn them with temps in upper 40's and through the 50's. I even ventured out a couple of times with temps in low 60's . These bibs, while admittedly a little tough to get one, seem to disappear once they are on. They are so, so comfortable you nearly forget them. I've always been warm enough, never any chill. And, the chamois is one of the most comfortable that I've ever experienced in any bibs, long or short.
Lighter weight non thermal material used on lower leg make these great for crisp mornings where the temperatures will warm up through the day.