MATERIALS 65% Organic Cotton, 20% Elastane, 15% Lycra. 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 Medical 14-20 mmHg Organic 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 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.