Originally Posted by
RB1-luvr
I know the OP wants a sock that fits in his existing shoe, but I have to go on record and say that my feet have never been warmer since I bought a pair of inexpensive closeout shoes 1-1/2 sizes too large and now I can wear a thin Smart Wool liner with the thickest Smart Wool expedition sock available. So warm, that I don't even need booties anymore, just an LG Toe Warmer. And I've ridden 60 miles in the low 30s with this setup.
That'll get you no cachet in a winter sock discussion.