Super Soft & Comfortable Non Binding Fit: Bamboo Sports B Men’s No Fly Briefs are made out of super soft Bamboo Rayon fabric. Their soft texture prevents any rubbing or chafing so that you stay comfortable all day no matter what activity you are doing. These briefs also have a super comfortable fit with a front pouch that is non binding and has enough stretch for comfort while still keeping everything in place. Prevents Chafing & Riding Up: The bamboo rayon fabric used in these briefs is so soft that you will have no chafing allowing you to do any activity without irritation or discomfort. The elastic around the leg is just right to keep your briefs in place without riding up and giving you a wedgie. The elastic is a perfect fit: not too tight and not too loose. These briefs also have a very comfortable and wide waistband so that your underwear stays in place without rolling. Breathable & Moisture Wicking: These bamboo rayon briefs are naturally moisture wicking and breathable so that you stay comfortable and dry. The bamboo rayon fibers allow for air flow and breathability while also wicking away any sweat or moisture from the skin to keep you dry and comfortable all day. Bamboo rayon fabric also naturally regulates temperature keeping you cool in summer and comfortable in the winter. Eliminates Odors: Bamboo rayon fabric has natural properties that reduce odors allowing you to wear these briefs all day without any odor.