95% modal, 5% spandex of mens briefs. Not easy to pilling,High-quality Fabrics. Made from natural modal fiber, which is better breathable, stretchy and softer than cotton. Please enjoy the silky touch of mens modal microfiber boxer trunks. Super soft men\'s underwear feature:Close and breathable,lightweight, wicking,cotton stretch Soft elastic waistband, Short leg Design and one-piece cut in the back, which has no wedge in the middle of the trunk briefs underwear to avoid embarrassed adjustment. Before June 18th,2018, Some customers reported that color 3 was somewhat small. At present, Seller have already adjusted the size of color 3 to the right size, so please buy it as the usual purchase size.And please ignore the size on the package of color 3 from FBA you getted Wash:no fade or shrink,Machine Wash (86 Fahrenheit max)