This all-over cherry blossom design for this bamboo fiber sock is certified organic by OCIA and certified free of harmful chemicals by OEKO-TEX. Fun socks–just another reason to shop organic. Consists of 59% rayon From bamboo, 39% nylon, and 2% spandex. Designed in Santa Cruz, CA. Sock size 9-11, fits U.S. women’s shoe size 5-10.5.