The tech perf hat helps keep you cool on the course with laser cut perforations on the crown embroidered eyelets and a soft sweat wicking inner band this premium oakley golf hat also features uv protective fabric to guard against harmful rays and logo detailing that stands out with unmistakable stylefeatures uv blocking design protects your head from the suns rays o hydrolix fabric pulls moisture away from the skin stretch fit 97 polyester 3 spandexintegrated technologieso hydrolixmaxim