These are the diabetic socks made with soft, Germanium-infused bamboo fabric that can help to promote increased blood flow to the feet. Carbonized bamboo and Germanium are believed to release negatively charged ions that stimulate the cellular structure of the skin, actively encouraging increased oxygen flow to the feet via the bloodstream. The 78% bamboo/22% lycra blend is knit with a proprietary 200 thread-count weave that provides lasting comfort. With non-binding welts at the top and frictionless toe seams, the socks provide freedom of movement that eliminate the rubbing and irritation caused by typical socks. Naturally anti-microbial, the socks absorb odors and wick away moisture, keeping feet dry and warm. Crew Socks. Men's size L (9 1/2-12 1/2); Women's size L (10-13). (3 1/2 oz.)