I really wanted to love these slippers. As far as sizing goes I'd say they run pretty true to size, I wear a 7-7.5 and the 7 fit me just fine without socks. I returned these because I did not think they were worth $50.
Pros: warm, soft
Cons: stitching rubs at ankle, not worth more than $20 in my opinion

if you are going to dish out money - i'd go with Old friend slippers instead - they last forever