Replying to Redbull's Exclusiveness

so the other day i was filling up a work truck at the gas station. and i'm standing there waiting and this dude pulls and starts pumping gas.. but he's wearing a super legit, sick looking redbull snapback hat.

now, my question is, can you buy those? or are they only exclusive to redbull sponsored riders? making this guy, a sponsored redbull rider..

i'm not on the up and up on any pro's of any sport.. so i have no idea who it coulda been. i live in san diego.. so i'm guessing it was some surfer or skater, if he was in fact a pro.