90% Nylon, 10% Spandex Black Compression Socks for Women Plus Size: XL,XXL,3XL,4XL,5XL for wide calves,suit for big and large legs. Offering comfort for men and women with wider calves. Please note: Even though these are plus size they are still tight. Check the Size Chart for the best fit! Say Goodbye to Your Pain: Relieve Swelling, make a huge help in swollen legs. Help for lymphedema, Varicose Veins, Sore Aching Muscles, Restless Legs. Use for improve circulation and post surgery recovery. Help to keep your blood flowing in your ankles and feet. They can use as Maternity Compression Socks, Pregnancy Compression Socks. Great for oversees flights, flying, traveling, sitting at desk for hours or who work on their feet all day long, fantastic support for nurses, truck driver. Comfortable & Easy to Put On and Take Off: The elastic band at the top is suitable, larger cuffs won't dig into your leg! Comfortable & does not roll down AT ALL! Air relief holes on socks front, keep breathable. Compression Socks for Women 20-30 mmhg Knee High: Graduated compression with 20-30 mmHg, the compression & support is perfectly located on Heel Foot Calves. Supported your legs for 12 hour shift. Machine Washable! They wash well without losing compression. Great Gift Ideas: Birthday gifts for Husband, Dad, Mom, Wife, Son, Daughter, Friends, or loved ones, give them health and happiness with this plus size compression socks!