what is Adjustable ladder harness system?

Don' let the name throw you off. It is an adjustable harness that allows the user to adjust the fit of the pack for an individual fit.Match the right size pack to your torso and the fine tune with harness adjustments.

Can a Little Brother pack be zipped to this frame or with Batwings?

your question is not 100% clear, yes the little brother can zip to mainframe, yes it can zip to mainframe if batwings are fitted. you zip the little brother to the batwings. ie one side of the batwing is zipped to mainframe the little brother zips to batwing. you get a cavity between the little and the frame (this can be useful for extra gear or meat) you then use the 3 compression straps to hold everything tight to the frame (and the batwings are zipped into frame also) i use this set-up for long-range hunting, or sometimes take a duffle and use that instead of little brother.

I am 6 feet tall (1,83 m). Will the regular size fit to me or do I have to choose the tall version?

I am 5,11 and use the standard size pack.

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Mainframe

Product ID: 587461935

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🎒Ultra-lightweight 4 lbs frame

🧩Highly modular & customizable

⚙️700 lbs load capacity

Description

🎯 Own the outdoors with the ultimate modular pack system.

MODULAR MASTERY - Customize your pack with endless EMOD accessories for any mission.
HEAVY DUTY HAULER - Supports up to 700 lbs—carry your gear without compromise.
RUGGED RELIABILITY - Built with 500D Cordura Nylon and YKK zippers for ultimate durability.
COMFORT IN EVERY STEP - Adjustable suspension system reduces fatigue on long treks.
VERSATILE EXPEDITION READY - Pair with Vapor series or dry bags for 2-10 day hunts or hikes.

The Eberlestock Mainframe is a lightweight (4 lbs), ultra-rugged modular pack frame designed for hunters and outdoor pros. With a 700 lbs load capacity, adjustable suspension for comfort, and compatibility with a wide range of EMOD accessories, it adapts seamlessly from day hunts to extended expeditions. Crafted from durable 500D Cordura Nylon and equipped with premium YKK zippers, it’s built to endure all seasons and terrains.

Specifications

Age Range	Kid
Color	Dry Earth
Size	Regular
Style	Tactical Backpack
Weight	4 Pounds
Width	11 inches
Material Type	500D Cordura Nylon
Outer Material	Nylon
Season	Fall, Spring, Summer, Winter
Features	Lightweight, Water Resistant, Zipper
Usage	Outdoor
Sport	Hiking, Hunting
Batteries Included?	No
Brand	Eberlestock
Department	unisex-adult
Manufacturer	Eberlestock
Product Dimensions	43.18 x 68.58 x 40.64 cm; 1.13 kg
ASIN	B00MWFJ96M

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