Jaxu Men's Modal Briefs Belt Open Side Underwear Bikini Brief Underpants 5% spandex 95% Regenerated cellulose fiber + 5% Spandex Machine wash in soft cycle or hand wash. Do not use chlorine bleach.Do not iron. Breathable modal fabric Pouch bikini,belt open size,over hips design M(Fit Waistline 28.3"~32.3")/L(Fits Waistline 30"~33.8")/XL(Fits Waistline 31.8"~36.2")