I wear a beanie which is large enough to come over my ears until about -1C ... if it's colder then that I put on a thin balaclava. I also have a thicker balaclava for very cold conditions. I don't cover my mouth or nose until about -15C and colder. I also use a bit of vaseline on my nose and face in extremly cold temps. I also don't use any goggels but instead I just use clear safety glasses when it's very cold.