In Justice League: The Flashpoint Paradox movie, Thomas Wayne (Batman in this timeline) hands Barry a letter addressed to his son and tells him to go back in time and prevent this from ever happening. Later, Barry "wakes up" at his desk, much like the beginning of the movie, and gives Batman the letter from his father. How did he keep it while traveling through time?

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    Are you asking where on his person was the letter kept, or how did the letter survive the rewriting of history?
    – Monty129
    Commented Jan 21, 2015 at 9:43
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    I believe Barry Allen belongs to one of the lesser-known superhero teams, the Brotherhood of the Time-Travelling Pants Pockets. Commented Jan 21, 2015 at 9:46
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    @Monty129: "Um... sorry about the smudging. I didn't have much of anywhere to keep it in this costume and I think the lube stained it."
    – FuzzyBoots
    Commented Jan 21, 2015 at 13:22
  • I mean, he could have folded it like a million times and kept it in that ring he keeps his costume in. @SeanDuggan
    – Monty129
    Commented Jan 21, 2015 at 13:28
  • @Monty129 He has pockets, he just didn't know he did before. Or am I thinking of someone else...
    – KSmarts
    Commented Jan 21, 2015 at 18:07

2 Answers 2


More than likely, since the letter is simply a piece of paper, he put it under his costume while he traveled through time. The letter would be inside of his speed-force generated aura and thus protected from the ravages of travel the same way his costume is.

"The Flash's body is surrounded by what he calls his "speed force aura". This aura protects him and anyone who is running with him or carried by him, from the effects of using his speed. This includes friction and airborne particulate matter. It also protects him from injury from high speed impacts such as punches he delivers and receives from his opponents. With this aura, he is able to absorb kinetic energy. He possesses a level of superhuman resistance to injury which at times does extend far past normal physical interactions, as received from normal combat." Reference: Wikipedia - Flash's Powers

  • The letter would survive the historical rewrite because the Flash is at the center of the event. He would have existed in both periods and experienced both timelines. So he would be able to carry away something small like a letter from one timeline to the next.

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    Dangit, Thaddeus - you beat me to it. Ah well, +1.
    – Omegacron
    Commented Jan 21, 2015 at 16:42
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    Sorry Omegacron. I left it up for a few hours thinking someone would get to it. I was feeling like I might be getting greedy, but when no one answered it, I figured it shouldn't sit here unanswered much longer. Commented Jan 21, 2015 at 16:46
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    No worries. A correct answer is a correct answer.
    – Omegacron
    Commented Jan 21, 2015 at 17:07
  • It makes me wonder how come he didn't have his suit anymore in the other timeline though. I guess it's the other speedster's doing.
    – Clockwork
    Commented Mar 17, 2021 at 14:20

Actually, he wouldn't have to tuck the letter in his suit. He can travel through time with anything he can carry so long it's not heavy enough to slow him down. This is why he can pick people up and carry them out of danger without instantly ripping them apart. Ever hit something while driving? 30 mph to a dead stop? It hurts, a lot.

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