How does Batman change his clothes so quickly?
Superman can use his extreme speed to change his clothes quickly.
Batman is not super human, He does not have super speed. He is strong, but, no where fast enough to get changed that quickly.
Whether it be the spandex of the 60s or the rubber of the last few decades, he has to take off his suit and put on the Batman suit.
So, going down the pole, how does he get changed?