tbaker323-0wrote a review of Pearl Izumi Pursuit Thermal Cycling Bib Tight - Men's on January 8, 2018
Familiarity: I've used it several times
I've been commuting in these all winter. Seven miles each way, four days a week. I run a little warm and use them below 45F. I have only used them down to freezing, but I think they would be fine down to 25F or so. The material is soft and comfortable with enough stretch in the right places. Yellow accents are bright enough to help with dark hours visibility.
I recommend considering upsizing from your usual short bibs. I have two pairs of Pearl shorts size M that fit fine, but had to go up to a L for these. I'm not sure if it's because of the cut or the thicker material.
I'm very happy with these and would recommend them to other winter commuters.