I wear a size 9 in men's and had to order a large because the medium wouldn't go above my calf (also the medium wouldn't stay up as if the elastic was weak). The large also does not go above my calf and do not stay up or doesn't feel snugged around the elastic. I like for my socks to reach above my calf and remain there until there taken off. It's unfortunate that I had to return them because they actually are comfortable.
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