Scholl Flight Socks support leg health on long journeys, helping to combat Deep Vein Thrombosis (DVT), swollen ankles and tired legs with medium graduated compression (14-17mmHg) that promotes healthy blood circulation. Made from Lycra, these 30 denier semi-sheer socks in Natural have a reinforced toe and antimicrobial protection to keep feet fresh. Wear them instead of regular socks, reaching just below the knee. UK size 4-6 / EU 37-39. Pack Contents 1x pair of socks. Safety Warning If you have, or have a history of, blood clots, a blood clotting disorder, heart or circulatory problems (e.g. arterial or venous insufficiency), diabetes, severe varicose veins, cancer or reduced mobility, have recently had major surgery or are pregnant, consult a healthcare professional about whether this product is suitable. Scholl recommends measuring your calf and ankle to ensure a correct fit, ideally once under the guidance of a healthcare professional. If the socks feel loose or restrictive, or cause pain or discomfort, stop wearing them and seek advice from a healthcare professional.