The chevron Argyle compression socks blend together fun designs with the innovative compression sock technology. The compression socks utilize graduated compression technology, which means that there is the most compression in the ankle area and the least in the calf, thus creating a pressure gradient to improve circulation. This leads to many benefits including relief from restless leg syndrome, decreased appearance of varicose veins, lessened leg fatigue. The compression socks are moisture wicking and Anti-odor. They are made in the USA and are designed to last. They are perfect for travelers or anyone on their feet all day, such as nurses. Your legs with thank you for wearing the Fresh Legs ditsy Flower compression socks. Size chart: shoe size (product is Unisex, please order based on your shoes size) men: M 6 - 8 L 8.5 - 12 women: s 5 - 7 M 7.5 - 9.5 L 10 - 13.