I am VERY picky about my fuzzy socks.  I have only found a few I like.  The problem with these is that, although they are probably fantastic to sleep in because they are comfortable, my feet slide all around in them if I'm wearing them around the house.  They are slippery, not sliding on the floor, but between my feet and the sock.  Makes walking difficult. I would wear thick socks like this in the winter in my crocs around the house in case you are wondering under what circumstances anyone would walk around in these...  If I used them only while I am on the sofa crocheting or watching TV they would be great.