What kind of supplies do you need to ride out an apocalypse?

In the United States, plenty of doomsday preppers have asked themselves that exact question.

Business Insider compiled a list of products that might come in handy once you retreat to your survival bunker.

In the event of doomsday, you might want to hit up Costco, Amazon, Sam's Club, and BJ's.

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In the United States, there's a whole sub-culture dedicated to amassing supplies for the end times. These preppers often consider widespread, earth-shattering catastrophe to be an inevitability, and they stock up on food, water, weapons, and tools accordingly.

And the trend seems to be catching on. In 2018, the New Yorker chronicled the spate of billionaires who plan to flee to underground bunkers in New Zealand when things go south.

So what kind of products might come in handy when the end of the world appears imminent?

Here are a few supplies that you might want to keep handy in your underground survival bunker: