I've tried various products to keep my head warm while cruising across the snow at speeds of 60 mph+. The helmets have vents, so additional headgear is necessary to protect you from the generated wind chill. The Seirus Ultra Clava is a tremendous barrier to the sub-zero temperatures. I highly recommend this product to anyone who wants to enjoy the exhilarating winter sport of gliding across snow covered fields and mountain roads without suffering due to extreme wind and cold. The all-in-one construction insures a comfortable mesh between helmet and rider. Check it out. You'll be glad you did. Sincerely, Toasty in the Rockies