I normally would not write a review the same day I received an item but I felt compelled to so for my fellow Amazon customers as a warning. LISTEN TO THE REVIEWERS!! I'm certainly glad I followed their advice and this is what I'm talking about. Reviewers advised to buy a larger size then you normally wear because these slippers run small. I listened to their advice and am glad I did. My shoe size is 9 so i ordered the slippers in size 10 and I still could hardly get them on.  One size larger and I still struggled to get them on. To be fair I've been wearing them now for two hours, they're tight but I think they might be stretching, at least I hope so. So once again I wrote this review just as a warning that if you order these slippers get them larger and be prepared to struggle the first time you put them on. I don't know what this  company uses for it's measurements but it has to find a better way of doing it.TWO WEEKS LATER: After two weeks of continuous wear I can now state that these slippers were a waste of money. They're still tight, still a struggle to get on every day. It seems once you take them off they shrink or something. Try putting them on again and you struggle. My advice is you need new slippers DO NOT BUY THESE SLIPPERS!