I ordered 2 pairs of these for my husband and my father for Christmas in sz. Large, they were very small for both of them who have sz. 11 feet. My husband opted to keep them because they were warm but the second time he put them on he used the pull strap on the back and one of them broke completely off, he wasn't even pulling hard! Overall he likes them when he finally gets them on because they DO keep his feet toasty and warm but he will definitely be buying another brand in the future.