It’s rarely a good thing when MLB becomes a subject for late-night comedy shows, and the league indeed is back in that mode with its new on-field uniforms, developed with Nike and Fanatics. Jimmy Fallon and John Oliver each recently mocked the revised looks, particularly the see-through uniform pants, amplifying what has been an embarrassing two weeks for the league.

The situation, however, also confirms what has been true for decades: Few things are held more sacred and generate more passion in sports than uniforms. Here is everything you need to know about the ongoing situation around MLB’s sartorial saga.