The GoCoCo sock "No Show EXM" has an extreme design with the unique capacity to minimize smell from sweat on the feet. "No Show EXM" fits for all type of sports and has a solid support for the foot arch. The sock has extra volume under the heel and the sole of the foot. "No Show EXM" has no shaft. Available in Black/Grey, White/Grey. The size is uni and fits to shoe size 39-43. Material: 44% Combed Cotton 39% Cocona™ yarn 15% Nylon 2% Spandex