11 Scenes From the New Avengers: Endgame Trailer That Are More Important Than You Think

Specifically, they're going to the Quantum Realm. As I said, this suit looks remarkably like Scott's Ant-Man uniform, but it's also an upgraded version. Undoubtedly, the suits are courtesy of Tony — because as he says, he just "makes everyone look cooler." If we had to guess, the suits give everyone Ant-Man's ability to "shrink to roughly the size of an ant," with a bit of that Stark nano tech to give them all kinds of special awesomeness.