The GoCoCo sock "No Show" has the unique capacity to minimize smell from sweat on the feet. "No Show" fits for all type of sports and for every day use. The sock has a solid support for the foot arch and it has extra volume under the heel and the sole of the foot. "No Show" has no shaft. The size is uni and fits to shoe size 36-38. Material: 50% Combed cotton 40% Cocona™ yarn 8% Nylon 2% Spandex For construction see picture 2.