I wear size 10 & 1/2, so logically I ordered size 11 since 10.5 was not available at the time.  They were too small.  The way the slipper is cut, you need for your foot to slip into the slightly raised heel.

The seller promptly accepted the return of the slippers for the next larger size, size 12.  So you'll probably want to order one full size larger than what you ordinarily wear.  Maybe even a size and a half bigger if you don't like too snug of a fit.

I don't want to discourage anyone from buying this item.  When I first put them on after receiving the size 12, I wished I'd ordered 12.5 or maybe even 13.  You might be better served by going to a store for slippers so you can find a pair that fits to your liking which is what I will do next time.

The slippers are kind of comfortable, they will at least slip on and off without having to bend down to do anything to them to get them to go on or come off.

In summary, if you like a fairly snug fit, and you want them to fit you just about right; order one size larger than what you normally wear.  You read that right.  If you like a snug fit, order one full size larger, e.g. you wear size 10, order size 11, 11.5 or 12 seriously.

Finally, the price.  In my opinion the slippers would be a better value, or more fairly priced at $35.99 - $39.99.  They're nice slippers, but I don't know about $50.00 worth of nice.