Sigvaris' Sea Island Cotton Socks are part of their Zurich Collection, and provide graduated compression therapy with 15-20mmHg to revive legs and improve circulation. They are knitted from the world's rarest cotton, Sea Island Cotton, which is lightweight yet strong, with a silky luster and incredibly soft feel. These socks are breathable and comfortable for those with sensitive skin. They are also ideal for travel or everyday wear, to improve health and well-being.