jeansian Men's Sexy Bamboo Fiber Underpants Briefs MUB014 USA S(W27-W30) 27-29 inch (68-76cm) USA M(W31-W33) 30-32 inch (77-83cm) USA L(W33-W34) 33-35 inch (84-90cm) USA XL(W35-W36) 35-37 inch (88-94cm)