I will have to look into these for next year now that I live in a place that actually gets cold. I have been using some 6 year old Rapha wool baselayers with a short sleeve jersey and jacket, and that has been fine down to about 32 degrees, but if there is no snow and it has been dry (common here most years) I wouldn't mind riding when it is a little colder, and the wool Rapha baselayers aren't THAT thick.