Speedo Men's Rally II 18 Inch Swim Trunks polyester 100% Brushed Polyester Microfiber Premium quality wicking polyester for quick drying and a soft feel, outseam of 18" is perfect length for any activity Comfortable elastic waist with drawcord and dyed to match liner Back zipper pocket for valuables Machine wash. Do not bleach. Dry flat. Do not iron. Do not dry clean.