F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe

F1 Mainframe

The Most Versatile Pack Ever

Regular price Sale price $249.00
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The F1 Mainframe represents what is arguably the greatest innovation in modern pack making, the holy grail of a great modular pack system. But unlike any other pack system, with this load bearing workhorse as a base, you can build a true ultra-light pack simply by adding one of our J2DB Dry Bags.

The F1 is one of the primary base-platforms for the EMOD -- the  Eberlestock Modular System, and it works with an ever-growing number of complimentary accessories. Add components of your choice, and the Mainframe can function as a freight pack, day pack, or all-around utility pack.  For hunting, it transforms to a meat hauler within seconds

ULTRALIGHT SETUPS

  • The Transformer is ideal for day or overnight hunt trips. Stay organized but still have a frame to haul meat.
  • Use 2 Batwings when you plan to go in light and come out heavy. Stay quick, light and mobile with the Batwings. They are intuitive and make packing out meat simple.

MID-RANGE SETUPS

  • Pair with the Spike Duffel or Dry Bag with Batwings for a 2-4 day hunt. Pack all of your gear into the backcountry and when you reach camp and drop your gear, unzip the duffel or dry bag and hunt in your ultralight Batwing setup.
  • If you like the organization and function of a backpack, the Little Big Top is the ideal choice for a 2-5 day trip. Allows for top-loading or front-loading access and use the Mainframe when it is time for some heavy lifting.

EXPEDITIONARY SETUPS

  • The Big Top is ideal for those who want to get out and stay out for extended 5-10 backcountry stays.
  • For a 5-10 hunt, use the Dry Bag and Little Big Top. Pack all of your gear into the backcountry and when you reach camp and drop your gear, unzip the dry back and hunt in your compact Little Big Top setup. 

EASTMANS' HUNTING JOURNAL REVIEW

Recommended for: 

  • Hunting | Hunting

Recommended Add-Ons:

PRODUCT FEATURES

  • 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 manufacturers warranty.

F1T (TALL VERSION) PRODUCT FEATURES

  • Tall version is 3.5" taller than the regular size
  • Designed for those with extra-long torsos or prefer higher load-lifter straps
  • Tall Mainframe is compatible with the same accessories and packs as regular Mainframe

REGULAR PRODUCT INFO

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

TALL PRODUCT INFO

  • Weight: 4 lbs 8 oz
  • Dimensions: 29.5" x 11"w

Customer Reviews

Based on 178 reviews
92%
(164)
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J
J.W.
awesome

great product

C
C.F.
F1 tall mainframe

I like the extra height of the pack. It is comfortable and transfers weight to hips very well. Straps are comfy, and the modularity lets you set it up any way you want. 2 Batwings and a small scabbard was all I needed for my deer hunt-light and easy!

L
L.
This is my second F1 Mainframe

I bought my first F1 about 5-6 years ago. Other than some wear and tear from the abrasive rocks on the mountain I hunt, its still fully operational, even the zipper still works. My son started hunting with me now that he's old enough and last season I ended up surrendering my F1 for him to use. It adjusted down to his torso really well and he was no longer sore from his other pack.
Now he has his own brand new one and I have old faithful once again

N
N.P.
Light and Versatile

First time using the pack was a glorious upgrade from the J34. What I love the most is the ability to go with just the shelf to help a friend pack out, a couple of batwings for a day hunt, or batwings with a duffle on an extended hunt. Used it for a 5 day archery deer hunt in Arizona with 2 batwings, 3L bladder, and top pouch. Very light and comfortable. I did upgrade the shoulder and hip straps for added comfort as the ones that come with it are not as comfortable packing heavy loads. I recommend this pack!

B
B.K.

F1 Mainframe