The knee high, Mediven Comfort compression stocking are an essential aid in preventing vein problems, like DVT, for occurring or treating severe venous conditions and edema. The Mediven Comfort stockings have an extra firm compression level, 30-40 mmHg, that increases circulation to the legs. The unisex stockings provide relief from leg soreness and fatigue. The Mediven Comfort stockings look like ordinary hosiery and come in a variety of styles and colors. Sizes range from I-VII.