What does Superman wear under his costume?

That's right - he wears the Superman Black Logo T-Shirt.

Why is that? Because there are occasions when saving the Earth from villains actually finishes up before 22h so there's still time to ditch the costume, reveal the tee and join the Metropolis bar crawl.

Made from 100% cotton, this black Superman t-shirt for men features a bright, screen-printed, red and yellow Superman symbol.