These are great socks.  They are thick but not too thick-  comfy and warm.  They don't bind your feet in any way- its almost like being barefoot but with cozy socks.
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Edit 1/2014:  I loved them so I bought more pairs this past fall and have to retract my 5 star view and drop it to one star.
Each and every pair I purchased have developed holes-- all in the same spot near the ankle. The quality frankly stinks.
I won't be buying any more.