MATERIALS 95% Polyamide, 5% Elasthan. USE THE SOCKS IF YOU Spend many hours on your feet every day and suffer from swollen ankles & fatigue. Have aching or heavy feeling in your legs or calves. Have spider veins, foot pain, restless leg syndrome, shin splints, varicose veins, plantar fasciitis or other leg swelling issues. Want to prevent blood clots, especially after surgery or when flying. Want to prevent injury when inactive, boost your performance during training and speed up recovery after exercise. FIT & DESIGN These 18-21 mmHg Graduated Compression Socks are made of the highest quality materials and are very durable without compromising a fashionable look in a variety of colors. The super comfortable fit provides graduated compression from ankle to calf and the padded foot bed absorbs jarring shock, helps prevent painful blisters and the ventilated parts wicks away sweat for a cooling comfort. TESTED & RECOMMENDED By Olympic Runner Stina Troest. WASH & CARE Wash Inside Out. Wash With Similar Colors. Water Temperature Not Above 40° C or 105° F. Do Not Iron. Do Not Tumble Dry.BOOST BLOOD CIRCULATION WITH GRADUATED COMPRESSION: Say goodbye to sore and swollen legs today! DANISH ENDURANCE Compression Socks are tested with the leading Swiss MST IV Technology (Medical Stocking Technology) to boost your blood circulation and ensure fast muscle recovery in your calf, feet, ankle or legs. These socks are breathable, sweat wicking, easy to get on and specially designed to increase oxygen flow, reduce injury and provide maximum comfort.