Champion Men's Powertrain Performance Short Body: 90% Polyester, 10% Spandex; Compression Liner: 84% Polyester, 16% Spandex Imported Machine Wash Champion vapor technology with X-Temp dries faster as your body heat rises Moisture management technology wicks moisture away from the skin Comfort elastic waistband and convenient side pockets Targeted ventilation for breathability 10" inseam