Style #4206 Graduated compression (15-20 mmHg) improves blood flow and reduces swelling and the risk of DVT (Deep Vein Thrombosis) and DOMS (Delayed Onset Muscle Soreness). Superior fit and stretch offer all-day comfort. * URfit® System provides arch support and memory-knit construction * Scentry technology resists odor in the sock * Fights fatigue by increasing blood flow up leg from the ankle with 15-20 mmHg of graduated compression * Smooth, flat comfort toe seam * 95% nylon, 5% spandex