You can always use another pair of socks, right? American Trench makes a great one. These are made of natural, unbleached, American-grown cotton and have an especially comfortable footbed with some cushion to it (but not too much). They're crew length with a universal fit that promises to work for both men's and women's sizes.
natural, unbleached cotton knit
68% cotton/16% nylon/12% acrylic/4% elastane
fits US men's sizes 8.5-13 and US women's sizes 6-10
“Contrary to popular belief, Ben... I, Sid Mashburn & the fellas that work at Sid Mashburn actually DO like socks. And we wear them often. We use them to complement an outfit or for the more practical reason, to stay warm and protect our feet. But since we often do go without, we've narrowed down what we like in socks to a pretty extreme degree.”