There is a reason ALPS Mountaineering calls this thing the Denali Backpack AAA. It is pretty frickin’ huge. If you pack it correctly, you could take this pack into Denali National Park with your sleeping bag in the zippered bottom compartment, and your tent, layers, and bear canister in the top-loading mains section.
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ALPS Mountaineering Denali Backpack - 5500 cu in by dm_501c13c9da89d