Firstly, I ordered a MENS SZ10 , I received a Mens sz9. But, they fit me, the wife, who is a Women's sz8.5. Strike 1, wrong size shipped. But they fit me so okay.
Strike 2 is, why do they fit me?!
Sizing is way off.
Three stars because still VERY comfortable and because they are shower shoes, they're actually perfect for me when I am caring for our pool.

Buyer Beware with sizing and double check your order. Comfort 