This addition to our incredibly popular line of bamboo socks, the Performance Sock, has an added arch support weave as well as a new heel cup weave to help in maintaining the socks alignment with the contours of the foot. The basic fabric of the sock is still the time tested half-cushion design, giving a moderate pad for the sole of the foot while the flat weave on top of the sock allows for increased ventilation. In an attempt to add a little style we have given the sock a grey-natural color scheme and added a woven "Spun Bamboo" to the collar. Give these a try.
Unisex sizing: S, M, L, XL

Size Guide
Small = Men's Shoe Size 4-5.5 Women's 5-6.5
Medium = Men's Shoe Size 6-9 Women's 7-10.5
Large = Men's Shoe Size 9.5-11.5 Women's 11-13
XLarge = Men's Shoe Size 12-14 Women's 13+