I just use a Garneau helmet cover on my Bell Metro helmet. My daughter made knitted wool ear muffs that sew on the helmet straps. Then if it becomes necessary I use a silk balaclava as it takes up little room. The final touch if wind is severe and my eyes water too much I get out the Scott ski goggles. After I get the goggles out I use them every day. They don't fog much unless I stop for a long time. Good luck. Let us know what works best for you this cold season. I usually miss about six days of commuting per year, summer, winter, and all.