Welcome to Adventure Time Answers. What would you like to know?

Because they need to hold all their stuff from/for their adventures. After all, their backpacks are stylish and functional for the many adventures they endure.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.