Compression socks exert a gentle pressure one the legs, reducing the diameter of distended veins, and causing an increase in blood flow throughout the body. Unlike traditional dress or athletic socks, compression socks use stronger elastics to create pressure on the legs, ankles and feet. By compressing the surface veins, arteries and muscles, the circulating blood is forced through narrower circulatory channels. As a result, the arterial pressure is increased, which causes more blood to return to the heart and less blood to pool in the feet. The result is relief to tired, heavy legs.Features Built in Plantar Support Zone to properly support the foot arch. Exclusive Absorber Extreme Cushioning System impacts during daily activities thanks to the specially reinforced internal structure of the sock. The exceptional Long Lasting Cushioning System provides constant shock absorption while the good reactivity of the fabrics maintains their original shape. Engineered with Silver DryStat, an exclusive wicking and hygienic fiber to keep your feet dry and comfortable all day long. Size - Extra Large Color - White Dimension - 7 x 4 x 1 in. Item Weight - 0.3 lbs. - SKU: SKWS451