I hate the compression socks for the same reason ny_biker but I do use them on long haul flights (6 hours or more, longest ~16 hours). I am always drinking water, though, and usually take an aspirin before such flights, sometimes also the day before, too. And I get up and walk any chance I get. The calf sleeves I have used in car drives (up to 6 hours), as well as compression tights.