Rob,they are are fairly warm and I get really cold feet,to the point I have to change my socks in stand on cold days to keep from freezing,regardless of the boot I wear.My feet just sweat[:'(].


I don't know if they have anything in them for warmth,can't remember ever seeing it advertised.

They are fine to about 30 deg or so for me,then I have the shields in my pack.