This all-over rose design is from Socksmith's bamboo collection, and 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. Sock size 9-11, fits U.S. women’s shoe size 5-10.5.