I wear size 12 shoes, either normal or sometimes wide width. I ordered 12-wide slippers. They were too small. Toes started hurting in just 10 minutes. Sent them back under Amazons free return policy and re-ordered 13-wide. Still waiting for them to come. Will update then. Also, the shoe sizer app posted on the item page said 12-wide was what I should order. So, you can't trust that. These definitely run small, a lot.<br /><br />-UPDATE-<br /><br />Received my replacement size 13-wide. They fit better now but overall, I'm not impressed. My feet still hurt after awhile. For $50 I was expecting better. I would not buy again for this price.