Diabetic socks for big and tall size 13+. 91% Cotton made from American Yarn in peru. Great for diabeties, Nueropathy, Swollen feet. Very Genegrous proportions will fit up to a 19 inch diameter Swollen calf and allow for the circulatoin of blood through out your body. Many are using synthetic fibers for diabetic socks but cotton is the only way to go. Available in 3 colors to choose from Gray, White and Black.