Copper Blend Compression Sleeves, Calf Support , Knee High, Mild Graduated Compression. Aids to Combat Achy Legs, Varicose Veins & Edema. Ideal for Flight Travel, Prolong Sitting or Standing & Maternity Wear 70% Bamboo Charcoal/20% Copper Threads/10% Elastin Helps relieve muscle and joint pain, stiffness, and soreness Bamboo charcoal fiber/copper thread blend is snug-fitting yet comfortable; won't restrict movement Comfortable compression and support improve blood circulation the natural anti-bacterial properties of copper help fight fungus and odor Fashionable style and colors