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
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 $279.00 Sale price $237.00
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F1HS

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One of the primary base platforms for the EMOD™ system with a constantly growing number of accessories. Build it up to be a multi-day expedition pack, or go in light so you can come out heavy.

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. The F1 Mainframe™ is fully adjustable and completely user configurable with endless combinations.

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.

EMOD Compatible

Load Bearing

Meat Hauler

Intex II Frame

THE EBERLESTOCK GUARANTEE
We are confident that we fulfill every order with the utmost quality, accuracy and timely delivery. In the event that we do not meet any of your expectations, we are happy to return or exchange items that comply with our simple guidelines
FIT & ADJUST YOUR PACK

Videos

The Vapor Series

Available in three size options — the Vapor Series redefines ultralight hunting.

Batwing Pouch

The perfect option to build a minimlaist day pack.

Pairing the Mainframe with Packs

See some of the most popular setup options with the Mainframe.

REGULAR PRODUCT SPECS

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

TALL PRODUCT SPECS

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

PRODUCT FEATURES

  • Built-in Grapple compression straps
  • Zippered attachment points
  • MOLLE webbing matrix on main panel
  • Adjustable ladder harness system

F1T (TALL VERSION) PRODUCT FEATURES

  • Tall version is 3.5" taller than the regular size
  • Designed for those with torso lengths measuring 19 inches or longer
  • Tall Mainframe is compatible with the same accessories and packs as regular Mainframe

Customer Reviews

Based on 479 reviews
92%
(443)
7%
(32)
1%
(4)
0%
(0)
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(0)
T
Terry T.
Durable Versatility

Very durable, wears well, and is exceptionally versatile.

J
Justin M.
A great pack

Everything about this pack was great. It makes the load you carry feel dramatically lighter. I swear it defies physics.

W
Warren C.O.

F1 Mainframe

e
edmond d.

F1 Mainframe

D
David D.
It’s prefect.

I hunt mostly in the Midwest for whitetail. I have a set of Batwings on it most of the time and it works perfect for me.

M
Michael A.
F-1 Mainframe

I’m impressed with the overall frame. I would definitely recommend it.

P
Patrick W.
Very good, but...

Overall I am very pleased with this modular frame system. It carries weight extremely well, no hot spots like my other meat carrying external frame packs create. The thin profile allows relatively good dynamic movement, and when it is running light, it stays out of the way. The only reason I'm not giving it five stars is because the direction of the zippers, specifically using the bat wings, invite gravity combined with motion to unzip the zippers. Only one of the bat wings has a clip to retain the zipper in the up position. The other side zipper does not have this retention clip. And even the Batwing zippers that connect the two bat wings do not have a retention clip. Simple fix would be to flip the zippers around so up and down and down is up. Then no need for clips. Or at least have both sides equipped with clips. For being such high level gear, it seems a bit silly to have to use a twist tie to manage the zippers when out in the field. Inconvenient and not super quick to switch out. Otherwise, I hope this system continues to evolve because it feels relatively bomber and it's at a reasonable price point. This is my fourth eberlestock pack, I'm generally very well pleased and demand a lot from my gear.

J
Jonathan W.
super frame

super lite, very spacious and easy to learn best ways to utilize. modular and adaptable can carry more than you want to lift. also lots of secondary attachment points that are perfectly placed for securing every kind of accessory out there. cant wait to hit the trail again this pack was the difference hands down!

C
Caleb C.
F1 Main frame

Just used this pack on my wife’s moose hunt. Pack worked great. Held all the weight perfect on my hips. Can’t wait to put it to the next test.

B
Brian N.
Love this pack!

I used this on my first elk hunt and success all around.
I put pouches on the belt, have the batwings and the scabbard. everything is nice and tight on the way in; and then it was an easy adjustment to load meat and get it out.