I've been wearing them for a few days and they are very comfortable and warm.  The ties are useless though.  They are silky so when tied, they slip while walking from the weight of the poms.  I tried double knotting them, but then I had trouble getting them off my feet.  I ended up double knotting them before I put them on making sure they were as slack as possible so I could still slip them on.  I wear a 10.5-11 and these are a snug on my feet, but they don't come any larger.  I have hard wood floors and they squeaked terribly.  Now that I've worn them and gotten the bottoms dirty they have stopped squeaking so much.