Eberlestock F1 Mainframe Pack


Eberlestock F1 Mainframe Pack

The new F1 Mainframe is the next innovation in minimalist hunting packs. This system was made to serve any situation and any environment. With over 100 possible combinations, you can always make sure that you have the right gear, right when you need it. Combine it with one of our duffels, dry bags, or zip-on packs to build the style of pack that you need. The modular system works with over 15 Eberlestock add-on accessories the Mainframe can function as a freight pack or a day pack, and transform to a meat hauler within seconds. With our solid NT7 or 1000-denier nylon fabric, depending on your color choice, coupled with our ultra-light Intex ll aluminum frame, the Mainframe shaves off pounds while maintaining superior strength and comfort. Stop settling for "some of the above" and move over to "All of the Above". Eberlestock's new mainframe, an essential part of your next great adventure.

  • Weight: 4 lbs 5 oz 
  • Dimensions: 26"h x 11"w


  • Intex ll aluminum frame. 
  • Zippered attachment points compatible with our duffels, drybags, and more. 
  • Full MOLLE webbing matrix covers main panel to attach scabbards, pouches, etc. 
  • Three built in horizontal compression straps for securing your gear. 
  • Adjustable ladder harness system. Makes customizing the fit quick and easy 
  • Lifetime manufacturer's warranty.


  • Transformer 
  • Little Big Top 
  • Batwing Pouch 
  • Spike Camp Duffel 
  • Super Spike Camp Duffel 
  • J-pack Dry Bag 

Customer Reviews

Based on 3 reviews
Great Service

Really fantastic little company to support and do business with. We like supporting the little guy!

awesome pack frame

Blown away be the construction very tough. I've had this into hell and back. It's very comfortable with plenty of adjustment. Modular with the Eberlestock Super Spike duffel bag. Its also narrow and short so it doesn't go past your shoulders or head and get caught on the brush. Makes ducking through and under brush very easy.

Eberlestock F1 Mainframe Pack

I didn't think Eberlestock could possible beat their flagship J107 bag... but they did. First, it goes without saying, the quality of this pack is true to the Eberlestock name. It will last my lifetime and my kids. Second, there are just so many options for this pack. As others have said, it works well with a duffel. But I'm actually rolling with the Transformer on it and really like it. The combo is lightweight and offers great range of motion, but when I need to haul something large, I just pop off the Transformer and have a universal carrier. This is a great hunting pack but in the off-season I have it packed as my bug-out bag.