I got these slippers last Oct. 2011. These are very comfortable. I can't find slippers that are comfortable, I have severe Arthritis in both feet and ankles, and my feet slightly turn out ward, even though my feet sit funny on the heel, they are still very comfortable for me, they have held up very well and will buy another pair when these are done! I had no problems with pilling of the inside of the slippers. I  these slippers! You will too! The size seem to be correct, they don't seem to run big or small.

Update 12/12/14 I just bought another pair of these slippers!! I got 3 years out of these slippers, I would have had another year, but my feet bow out due to arthritis, so they stretched, I even went and bought last year a different pair less exspensive, they did not hold up even a year!! It's so worth spending the extra money!! These slippers are so comfy and feel good on my arthritic feet and I have neuropathy in both feet and they feel good! In these slippers!  I can't say enough about these slippers!! The seller is amazing too, had a problem with the shipping, and they fixed the same day I emailed them!!! I will be buying my next Sorel Slippers from here again!! And again!! Just hope they never stop selling these!! :)