I've had these a couple weeks, and they're just "okay" for the price.  I got them on sale - I wouldn't pay what they are listed for now.

Pros:  Fairy warm

Cons:  Run *REALLY SMALL* as other reviewers stated.  I'm a standard size 8.  I got the large (8-9), and they are borderline too small with regular socks - my toe goes right to the edge.  Since the material is soft, it doesn't bother me, but I regret not getting a size bigger for thick socks. Who would have guessed a 9.5-10.5 is needed to comfortably fit a size 8?  I'm hoping they stretch out with continued use.

Also, there really isn't that much padding, and I'm guessing that after a couple months of use I may need to put in an insert on the bottom.