It is very important to wear a comfortable underpant during the run. There are different kind of underpants, for example there are strings but also hipsters.
The Cermicool fabric of Odlo ensures a cooling down of the skin with 1°C. All the underpants of Odlo are seamless.
The underpants of Falke have a double layer. The fabric absorbs moisture and gives the runner a warm and dry feeling during the run. Also contains the underpants some compression. For the summer there is the Running Air Ventilation with a good ventilation.
The Moisture Transport System of Under Armour drains the moisture quickly and the Anti Odor-technology prevents the growth of bacteria.