Of course, Earth’s Mightiest Heroes needed some special Quantum Realm suits to make the journey to different time periods, and the outfits were definitely cool to see.
However, newly revealed concept art has revealed an alternative version of the suits, and it may be even better than what we saw on screen.
Avengers: Endgame introduced a number of new elements to the Marvel Cinematic Universe, but arguably the biggest contribution to the continuity was the introduction of time travel.