Brave Person Men's Boxers Fashion Smooth Trunks Gym Shorts bj1005 Size(inch): S: 26"-29''stretch, M: 28"-32''stretch, L: 31"-36''stretch Material: 80% Nylon+ 20% spandex. Smooth the nylon fabric of high quality, good elasticity, is a very good swimming trunks sports shorts. Spell color looks more fashionable, tight design, have very good shape body effect!