Tested in NorCal climate, about 55 with some wind chill. Even with my perforated gauntlets these helped block wind and cold feeling while riding to triple digit speeds. The material has a smooth finish that makes it easier to slip into your glove of choice, however be aware it will definitely feel a little tighter because of the added material. This also influences dexterity in your fingers, but I got used to it over some time.
Try on these beneath your riding gloves and note the change in dexterity and fitment to see if it is right for you. I have yet to try these in even cooler temps, say about 40’s. So far a good investment and I get to extend use of my cool perf racing gloves into the late fall early winter.