Chafing occurs when one are of the body rubs against another and causes the skin to develop a rash. If you are a man, you have experienced chafing at one point or another. There is a solution. Inside of each pair of UFM Underwear is a conduit that follows the natural hem line of the underwear. It starts at the top of the underwear and loops down and around the genitals. When the conduit is tightened, a pouch is created that completely isolates the genitals from the rest of the body. When the genitals are isolated, they can't rub against your thighs and cause chafing. Learn more about UFM Underwear's underwear technology. Learn more/buy: Briefs Boxer Briefs