Maoko Black Sports Running Pro Compression Shorts Underwear for Men 90% Polyester / 10% spandex, Machine Wash, Smooth HeatGear fabric, Good elasticity, Compression design Moisture Transport System Sweeps away Sweat and Dries Quickly Suitable for all sports indoors and outdoors. Prevents skin chafing and irritation when you in the gym or running Size Chart: S,M,L,XL,XXL ; Reference Size Charttabel bellow