We have unisex sizing. A good rule of thumb:If you wear a size 7 or 7.5 in women's, we recommend a size 6 in the Mantra, 5/6 in the Motto, and a Medium in Socks.If you wear a size 12 in men's, we recommend a size 12 in the Mantra, 11/13 in the Motto, and XL in Socks.