UA Performance Polo Men's:Black/Small AirVent Performance Hat features a

AirVent Performance Hat  features a breathable perforation that is moisture wicking to keep you cool on a hot day on or off the field

3 modes of vibration for independent use or combined with other treatments

and it keeps you cool

Embroidered Ascender on front

95% Polyester 5% Spandex

UA Performance Polo Men's:Black/Small AirVent Performance Hat features aUnder Armour Performance Polo keeps you cool & mobile, doesnt wrinkle, snag, hold odor, or fade. Thats why you see it everywhere. 4 way stretch fabrication allows greater mobility in any direction. Moisture Transport System wicks sweat away from the body. Anti odor technology prevents the growth of odor causing microbes. 30+ UPF protects your skin from the suns harmful rays. 95% Polyester 5% Spandex