AriatTEK® Heat Series shirts are equipped with advanced fabric technology to wick away moisture and keep you cool. Plus they look great and are comfortable to wear. •AriatTEK® Heat Series technology keeps you cool when the competition heats up •Moisture Movement Technology™ wicks moisture away from the skin •VentTEK™ technology features body mapping to enable air flow and regulate body temperature •Water resistant, performance stretch tek fabric •Ventilation fabric punches •Metal logo buttons •87% polyester, 13% spandex