NuVein Flight and Travel socks are designed for the male and female lower legs. It is the perfect travel accessory for preventing DVTs. The socks aid and regulate blood circulation which can be reduced when flying aboard aero planes. What sets the NuVein Compression Travel sock apart is its professional business-look design. Blends perfectly with work attire. From the flight straight to your meeting. To be used as a safety measure to stop blood clotting through a lack of movement. Can also be used on long car journeys, train journeys or aboard vessels at sea such as cruises. They will help the calf muscles through graduated pressure throughout the lower legs. Feel fresh and less fatigued when arriving at your destination. The socks are also used in pregnancy by women to assist in lower leg circulation. Measure according to size chart image.