Comrad Knee-Highs are medium-firm compression socks (15 to 25 mm Hg) made of nylon and spandex. They are thin and have no cushioning, though the toe and heel have a thicker weave (for durability).
Length is another aspect to consider since compression socks are available in knee-high or thigh-high options. Knee-highs tend to be more comfortable, so think about where you experience swelling ...