2XU Mens Pace 5 Inch 2 in 1 Short 100% Polyester Imported Built-in PWX 70D compression layer supports key leg muscles VAPOR fabric wicks sweat away from your body to keep you dry with extreme mesh on the side delivers max airflow and ventilation Non-restrictive, semi-split leg design ensures minimal cling and zero chafe Reflective details add a little extra visibility before dawn and after dusk Adjustable drawstring waistband keeps shorts securely in place with front and internal pocket for storage