I've been having a lot of problems with my feet and ankles swelling so when I saw these, & in the Large size I jumped on them. But, their idea of size large compared to other size large socks are quite different. I wear a size 11 1/2 to 12 and I cant even begin to get these on. Even after stretching them as much as I can I still can't get them on. I had got a couple pair of these for my father a little over a year ago when he was 85 and he loved them. They relieved a lot of the pain in his feet and lower legs and he wore them constantly till he passed away at 86 yrs old last April 2011. So although I cant get these on and try them myself I do know that they worked for my father and eased his leg and feet pain for a few months before he passed away.