What are those holes in your helmet for?

So as everyone knows by now, Juan Miguel Mercado outsprinted Dessel for todays stage win. Juan Miguel, thinking that Dessel would be happy with polka dots and yellow, at one point turned and tried to negotiate the stage win. Dessel would have none of it and forced Juan to sprint for it. So Juanito did, he sprinted while his helmet covered his eyes through the finish line. Ah...so that is what those holes are for! Asi..Asi Juanito!