Wool is your best friend for cold weather. Wool mittens with the flaps that fold back to expose your fingers (good for shooting). A hand muff helps. You see NFL players where them in Chicago, GreenBay, Buffalo, New England. A good thick wool stocking cap to keep your head warm. And here is something to try that has worked for me, get a box of the Thermacare heat wraps that go around your lower back, place one of them on over you first layer (polypro underwear) and you are good to go with some heat. Also, stay away from cotton as much as possible, not good for wicking away moisture which isnt good in cold weather. Fleece pullovers are a good thing to have as well. If you protect your feet, hands, and head/neck area you will be good to go if you layer your torso and legs appropriately.