Jobst for Men 30-40mmHg dress socks have a classic ribbed design, reinforced heel, comfort top band, and smooth toe seam. These stockings provide 30-40mmHg of gradient compression and should be worn under a doctor’s supervision. This level helps relieve severe varicosities, severe edema (swelling), and chronic venous insufficiency. It helps during healing after surgical and sclerotherapy procedures and helps prevent venous ulcerations. This level also helps relieve superficial thrombophlebitis. Woven from 73% nylon and 27% spandex in the USA.