Jobst Ultrasheer Pantyhose provide the perfect combination of fashion and comfort for a great look and great feel. They feature a comfortable waistband, reinforced heel, and closed toe. This stocking provides 30-40mmHg of gradient compression and helps improve blood flow, prevent edema (swelling), and reduce the discomfort caused by moderate to severe varicosities. It helps in recovery from sclerotherapy and other post-surgical procedures. And it helps prevent the recurrence of venous ulcerations. Woven from 61% nylon and 39% spandex in the USA.