The Jobst for Men 15-20 mmHg Thigh High Compression Sock with Silicone Border is a fashionable, ribbed sock that delivers effective compression support, yet looks like a men's dress sock. The Attractive ribbed design with all-day non-constricting comfort band keeps socks up without binding or pinching. The special soft micro fibers wick away moisture six times faster than standard nylon keeping legs & feet cooler and dryer longer. The special formula fights odor by inhibiting growth of fungi and bacteria on the socks. The Flat toe seams and roomy toe section provide extra wiggle room. The socks are also durable with a reinforced heel that resists shoe abrasion and strong yarns that resist wear and tear. They are machine washable, but for best results support socks should be washed in a mesh laundry bag or hand washed with warm water using a mild soap or detergent designed for compression stockings. Machine dry on low heat. The socks are latex free and made of 73% nylon, 20% spandex, and 7% silicone. They come in Large and Black. The 15-20 mmHg Gradient Compression Indication Guide is as follows: Discomfort from spider veins, Relief from minor leg swelling, Relief from minor edema / lymphedema, Relief of tired aching legs, Relief of leg discomfort during pregnancy, Minor varicose veins, Helps Prevent DVT (Deep Vein Thrombosis), Orthostatic hypotension, Postural hypotension, For wear following sclerotherapy. HCPCS Code / CPT Code: A6533