I wear a size 9-1/2 but bought the size 10 since they are only available in full sizes.  Even at that they were snug at the outset.  That has ceased to be a problem with wear, and they feel fine.  One very odd thing is the manufacturer label is sewn on the inside of the shoe at the instep.  Since I wear these as slippers with no socks, I always feel the label.  Couldn't they have chosen a better place than the instep to place the label?  One look at the label says it all however: made you-know-where.

Still and all, comfy shoes, good price.
4/1/13 Update.
The slippers are wearing terribly on the inside. The sheepskin inside the sole has worn away to reveal a waffle bottom which is rather uncomfortable.  I would NOT recommend these slippers under any circumstances.