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Granite Gear developed the unique Nimbus Core Backpack to give you easy access to larger, bulkier items. Carry your dry sacks, bear canisters, your tent, and/or a sleeping bag, as well as an odd-shaped item like a tripod, cinched down in the central easy-access storage space. Your clothing and other gear go in the full-length side zip pockets. No matter what you pack into the Nimbus Core, you’ll carry up to fifty pounds with ease thanks to the 3D TopoFlex frame that features a molded composite Y-shaped frame to offer an excellent combination of flexibility, support, and the ability to customize your fit.

  • Advection back panel conforms to the shape of your back while at the same time allowing cool air to circulate
  • Linelock side compression straps let you easily and quickly cinch a partially empty pack to your back for greater stability and comfort
  • Tool loops help get your gear up and out of the way
  • Two stretch side zip pockets, two stretch side drop-in pockets, and a massive front stretch pocket give you plenty of places to stash items you want easy access to
  • Floating pack lid comes off to save weight or to use it as a lumbar daypack
  • See size chart for measurement information; torso length can be further adjusted in small increments for a custom fit, and the ‘short’ size can be adjusted for shoulder width as well

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Granite Gear Nimbus Core Backpack - 3800cu in

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Here's what others have to say...

Unanswered Question

About Granite gear nimbus core short(outlet),...

About Granite gear nimbus core short(outlet), I know the torso suze is short.
What is shoulder harnes and waist belt size?
Both short?

Could someone take a few quick measurements?...

Could someone take a few quick measurements? Size of side pockets, depth of center core, especially.

Responded on

Try clicking on the 'chat now' button in the upper right corner of your screen and ask the guru. They'll have someone in the warehouse measure it for ya!

What size reservoir will the hydration...

What size reservoir will the hydration sleeve hold? 2-L? 3-L? Is it located centrally in the pack (as opposed to along one side like the Arch'Teryx Altra)?

Best Answer Responded on

FYI; the Nimbus Core does not have either a hydration sleeve or tube port. This confirmed by Granite Gear and also be looking at the pack I purchased.