Jobst Sporty Support Socks are men's and women's socks designed for use by individuals with circulatory disabilities. These socks use graduated compression to relieve poor circulation, mild varicose veins, swelling, and aching feet and legs. The socks have non-constricting stay-put tops, bubble toes, and reinforced heels. Made of acrylic, nylon, and elastic, the women's socks are knee-highs. The men's socks are made of nylon and natural rubber Latex and are over-the-calf style. SIZES: The women's socks are available in extra-small (shoe sizes 4.5 to 6.5), small (shoe sizes 7 to 9), or medium (shoe sizes 9.5 to 11). The men's socks are available in small (shoe size 6 to 8), medium(shoe sizes 8.5 to 10), large (shoe sizes 10.5 to 12), or extra-large (shoe sizes 12.5 to 14). COLOR: The women's socks are available in black, white, or cream. The men's socks are available in black, navy, white, or brown.