Fine rib knit of 100 percent mercerized cotton with no fly for a sleek fit Seamless sides and a lined pouch for everyday comfort Soft elastic waistband with the signature HANRO logo inside Slightly elevated waist and covered elastic around the legs Sporty simplicity is the core component of the HANRO Cotton Pure Brief underwear. Part of the HANRO Cotton Pure Collection, this mens no-fly brief is tailored from fine rib knit mercerized cotton with seamless sides, for true comfort. Other key design details include a lined pouch and soft elastic waistband for an exceptional custom fit. A slightly elevated waist and covered elastic at the legs are the final touch to ensure a sleek, flattering profile under clothes.100% Mercerized Cotton