In the winter I ride in cold weather, with temperatures typically between 0 and 32 degrees F, though sometimes dropping below 0 F.
The condition that causes me to need a wheelchair also causes me to be cold. I usually wear a light down jacket inside, even when the temperature inside is in the high 70s (F).
For my winter rides, bulky clothing is necessary. I usually wear multiple layers. On top, I will wear a heavy polypropylene long sleeve shirt, flannel shirt, sometimes a sweater, light down jacket, heavy hooded down jacket (baffled construction), and then sometimes a gortex shell on top of all that. On bottom, I wear long johns, pants, and down outer pants (again, baffled construction). I also wear a wool hat, neck gaiter, my old ski gloves, and insulated boots.
The outer down layers are what I used to use for winter mountaineering. They are designed for exceptional cold and do a very good job of keeping my core body parts warm.
Since becoming disabled, there is no amount of clothing that will keep my feet and hands warm. I require an external source of heat. I use chemical hand and feet warmer packs for that.
With all that, I am still limited to being out for an hour or two at a time in the winter. It usually takes about as long to get dressed as to do the ride
. It also usually takes the rest of the day to warm up after an outing.
I have used silk underwear (top and bottom) as well as silk liner socks and silk glove liners. I have also used a silk sleeping bag liner. I used these for various outdoor activities (hiking, backpacking, mountaineering, etc.) before becoming disabled. The only thing I regularly use now is a silk undershirt, which I sometimes wear at night when we are "camping" in our motorhome.
II have generally found that I like polypropylene better than silk, though silk sure does have a nice feel.
Steve