99extra Underwear, 4 Color Men's Star Pattern Modal Skinny Boxer Briefs 95% Modal/5% Spandex Imported * Better soft, thin, light, breathable and stretch than cotton * It still keep soft, resist from fading or forming pills due to friction even after repeated washing. It is good to reduce the stimulation to the skin * It absorbs 50% more water than what cotton retains and volatile ability is stronger than cotton. Keep skin to dry better than cotton underwear. * It is relatively thin and breathable, quickly take away skin's heat. We know, lower temperature is benefit for male genital organ health. * Doctor advised, a underwear don't use more than 6 months, it will become very dirty although you repeated wash it