I'm beginning to think the people who made this video don't care about the evolution of men's fashion.
The horndogs over at Mode.com made a video about how men's swimwear has changed in the past 100 years, but I don't think their motivation was an objective interest in clothing styles.
I think they just wanted an excuse to watch this ridiculous specimen of a dude take off his bathing suit again...and again...and again. In slow motion. And then to zoom in on his package as it would have appeared in 1945, 1955, 1965...is it getting hot in here? I might need to cool off with a swim in 1925.