Warm and toasty.  Not wool however.  Don't let the description mislead, these ARE NOT wool-lined.  It's a synthetic wool-like textured fibre.  That said they are roomy, warm and comfortable.  I am an 11E and a set of 11s in these give me ample room.

I contacted Amazon and asked them to modify the description since it is somewaht misleading - I see that hasn't been addressed.