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What is a backpack brain?

Large Top Lid Pocket
Large Top Lid Pocket

When people refer to a backpack brain, they’re talking about a top lid that fits over the top of the main compartment. Most top lids have at least one zippered pocket in them although some backpacks have two, one on top and another on the underside of the lid. People typically keep their maps and navigation tools (compass, gps) in the top lid, which is another reason it’s called the brain.

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