A set of three pairs of basic ribbed crew socks, each pair a different hue made in organic undyed cotton (the brown color is a modern revival of the original color of cotton). As with all RoToTo's products, they are knit with care and attention to fit. The ribbed, crew height cuff features a 1x1 rib knit to keep the socks up where they belong, and from the heel down they are knit in a jersey knit (similar to a tee shirt) to keep them from dragging down while being worn in leather shoes. Made in Japan.