I'll be honest and let you know up front that I ended up returning these back to Amazon even though I gave it a 4 star rating.  My reason was because they were too wide in the calf area of my leg and I thought they looked like clogghoppers on me but that's my own personal thing.  Otherwise I thought the comfort of them was like a house slipper.  The inside was super soft and warm.  I wear a 7.5 normally and went with an 8.  I tried on a 7 and they were too tight and an 8 was a little big, but not horrible.  I think with the right socks it would have been perfect.  It was a shame I had to send them back (honestly its a shame my calves are so freakishly small) as they were nice boots and would have been great for any other normal person.  Maybe I should try the higher up the leg version instead of the short boot version...