F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
F1 Mainframe
Tall F1 Mainframe
Regular 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

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The Most Versatile Pack Ever

Regular price Sale price $249.00
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The F1 Mainframe represents what is arguably the most durable and versatile pack frame on the market. The F1 features a tubular aluminum frame to provide its unparalleled strength while maintaining ultra-light capabilities. Tested to hold more than 700 lbs., this ultra rugged frame utilizes YKK zippers to allow the attachment of a variety of packs and accessories to fit any backcountry hunt. Experience premium comfort unlike the rigid frames of the past, as the Mainframe was designed to fit ergonomically correct, distributing the weight properly across the hips and shoulders.

ULTRALIGHT SETUPS

  • The Vapor 2500, 5000, or 7500c.i. for any length adventure with ultra-light considerations. 
  • 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 Super 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 new Vapor 5000 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

  • For a 5-10 hunt, use the new Vapor 7500. Pack all of your gear into the backcountry and when you reach camp and drop your gear, the Vapor series with collapse nicely against your frame to allow you to day hunt out of your camp.



Recommended for: 

  • 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 254 reviews
92%
(234)
7%
(17)
1%
(3)
0%
(0)
0%
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T
Terry P.
Comfortable weight bearer.

Great frame very adjustable. I fits me perfectly thanks

M
Mike S.
Does what it says

Purchased the F1 mainframe recently. Used it for a short hike, my vapor 7500 strapped to it smoothly. Frame is extremely comfortable with many adjustments. It carried my gear well. Strongly recommend!

S
Scott J.
alternative to suitcases

I have a toddler and baby on the way, so I wanted to find an alternative to suitcases that would free up my hands. I packed a week of family clothes in the Vapor 7500, an absurd number of pillows in the J3DB zip-on dry bag, and strapped them to the frame. In addition to free hands, it was much easier to get up and down stairs or other obstacles. My wife hated the idea, but, after actually going on a trip, EVEN SHE had to admit it worked really well. (I wish I'd taken a picture. Will do next time and update this post, if possible.)

L
Lorin H.
Eberlestock Frame

Amazed at the comfort of my F1 frame with heavy loads. Also like how lightweight the frame is

S
Samuel T.
Comfortable with heavy loads

Best fitting harness I've used bar none. When adjust right the pack feels better than any heavy load should feel.