No, this isn't the lamest super hero squad of all time. It's a mere product plug.
Every once and a while a news story pops up about a traveler or a family of travelers who are stranded abroad because of a damaged passport. This has never happened to me, but apparently it's a relatively frequent occurrence, inspiring an FAQ answer on travel.state.gov and online guides about what to do if you accidentally put your passport in the washing machine while traveling.
Of course, merely a bent passport can be enough to ground a traveler. So, spend a couple of bucks on a passport protector to make sure your trip doesn't get interrupted. I have a simple leather cover for mine, but there are a variety of options out there to fit everyone's desires.
+ If you want extra protection for your passport, and other belongings, check out this article by TPG on the best carry-on backpacks for travelers that are both water-resistant and filled with secret compartments.