[QUOTE=striegel;7787055]My favorite face cover is the Seirus Combo Scarf, which can pretty well cover the lower half of my ears as well. Together with my helmet, that takes care of everything down to just below freezing. And it's nicely perforated in front of the mouth, so you can breathe freely through it but it still keeps you protected from the wind.
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I have one of those gizmos and found that they don't work too well with glasses... they quickly fog up... If the wind is directly in your face, for some reason, they don't fog up at all and then this scarf is OK. So you find yourself constantly pulling the thing on and off. That's why I prefer a woollen scarf unless the temperature reach something awful...