What do the sherpa's wear?

sherpas climb mountains. sherpa, tenzing norgay helped sir Edmund hillary get to the top of Everest with him. they were the first to summit. because of generations of living at high altitudes, they have developed a genetic, natural allowance for it. you won't see them sweating and panting on the 50th day of a non stop hike like you would see someone who wasn;t a sherpa doing!!