1.80% Nylon, 15% Polyester, 5% Copper Fiber 2.COMPRESSION THERAPY INNOVATIONWe designed our copper infused compression socks (15 20mmHg) to just the right balance between warmth, compression, and comfort. Our products stimulate oxygen delivery to the muscles and augment airflow. This aids with joint and muscle recovery, and supports rejuvenating relief from pain and discomfort. 3.SIMPLE TO GET ON AND OFFJust slide over your foot and zip up. High quality medical stocking material won't lose its compression. Quality no snag zips with skin protector. Hose stays zippered all day long. The stitches of the zipper and socks are reinforced, and it is not easy to take off the thread. Toeless for secure fit and comfort. 4.QUALITY COMFORTOur products feature a unique breathable, moisture wicking fabric that stays warm in cold temperatures and cooler when the temperature rises. Copper's unique properties help eliminate odor allowing you to wear your sleeve longer without worry of offending those around you at the gym or at work. The remarkable fabric helps keep your skin dry and comfortable even in extremely hot temperatures. 5.INCREASE BLOOD CIRCULATIONThese compression stockings have different pressure gradients from bottom to top to ensure smooth flow of blood vessels from the distal end to the proximal end. These compression socks can prevent cramping, fatigue, swelling and helps in muscle recovery, varicose veins. Help prevent blood clots after surgery.