[kayfox]

It could be synthetic fur works best, after hundreds of years of scientific process we find that just recreating animal fur, which evolved over millions of years, is best.

Or it could be that someone standing on the desk of a dirigible floating in the clouds of another planet chose to wear gear that harkens back to the explorers of yore, like George Mallory.

Or it could be that it was done on a budget and a explorers coat and MSA Millennium mask are what they went for.