Jobst Opaque knee highs for men or women are made from smooth, soft, breathable fabric and are available in regular or petite lengths with an open or closed toe. The exceptionally soft yarns make this sock very easy to apply and a reciprocated and reinforced heel makes them very durable and comfortable. This compression level helps improve blood flow, prevent minor ankle, leg, and foot swelling, and reduce the discomfort caused by minor varicose and spider veins. Woven from a 81% nylon and 19% spandex in the USA.