NV-X Sport Compression Leg Sleeves are used by professional athletes worldwide to improve performance and speed up recovery after physical activity. Medical grade compression fibers (15-20 mmHg) help in the elimination of toxins, distribution of blood flow, metabolism of lactic acid and prevention of cramps and muscular pain. Improve aerobic and anaerobic performance. Helps to prevent cramps and muscular pain after physical activity. Fiber content: 46% nylon, 44% microfiber, 10% lycra.