85% Nylon, 10% Polyester, 5% Copper Fiber. Zipper Compression Socks for Men and Women - 15-20 mmHg graduated pressure reduces pressure on the lower leg. This pressure reduction can decrease venous return from the lower extremities and effectively relieve or improve pressure. The segmented pressure promotes more comprehensive blood flow. Unique Ergonomic Design - Our patented graduated compression zone technology provides optimal pressure where your body needs it most. Whether you suffer from leg cramps, aching calves, edema, swelling, shin splints, POTS, or varicose veins, these sleeves allow you to train harder, recover faster, and feel stronger. They aid leg circulation and reduce muscle soreness for post-workout recovery. Try them and feel the difference – you'll wish you found them sooner! Care for Your Feet/Legs - Knee-high compression sleeves for calves are breathable and made from excellent quality, durable compression material. 85% Nylon, 10% Polyester, 5% Copper Fiber. Recommended by doctors and preferred by trainers. With a seamless woven construction, they fit the calf without losing compression. The open-toe design accommodates various foot shapes. Available in 3 sizes – check the size chart in the image area. Suitable for All Occasions - The sleeves have a preventative effect and are suitable for runners, athletes, fitness enthusiasts, hikers, tennis players, cyclists, office workers, air travelers, or anyone who stands on their feet all day. Whether for high or low impact activities, these allow you to warm up safely and recover quickly. Calf sleeves and socks are also perfect for everyday wear, especially during pregnancy, for retail workers, air travel, nursing jobs, or any profession requiring prolonged standing.