Est. 2014 | USA Small Business

Eberlestock Just One Pack: Secure Rifle Carry Meets Massive Load Hauling
FREE Delivery & Lifetime Warranty
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Ships today or next day on most orders that are "In Stock". Some orders that are custom or large may take extra time to prepare.
- Free shipping is 3-10 days and requires a purchase of $70 or more, or choose a faster method at checkout. Be sure to account for the 0-2 days it will take us to pack and ship an order, in addition to the shipping speed you choose.
- All orders ship as soon as possible. We don't like waiting and you probably don't either.
- If there are delays: (Only if delays are in green, above, do we expect them), just know that we are on your side. If you're waiting, we're waiting for you, plus hundreds and sometimes thousands of others to finish being made.
- Shipping times are estimations. Items that are custom, delayed, rejected, or affected by other acts of god will take additional time.
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Return & Exchange policy:
- Summary: Don't take those sweet Instagram pics and then try to return a used item. Must be within 30 days of delivery.
- Exchanges: Realized you need a different item? That's ok! Exchanges and returns are incredibly easy.
- We are a Small Business: We do the most we can to help with return costs, but we are not Amazon and cannot take hits or losses like Amazon.
- Wrong Items: Mistakes rarely happen. Atomic Defense takes pictures of orders before they are packaged and shipped. We pay for return, recertification, and exchange shipping costs if we ever make a mistake on your orders.
- Rules for Returns: We will deduct refurbishing costs, plus materials and labor, of used products or modified products - or decline the return. This includes, but is not limited to; products with residue, smells, scratches, missing parts, debris, dents and damage. **We reserve the right to refuse returns. Refused returns shipping cost back to the buyer are not covered by Atomic Defense.
- Packaging: Ensure returns are packaged safely with thick padding on all six sides. Failure to correctly package returns may damage products and cost will be deducted from Buyer's account or return refused.
- Bulletproof products: No one else accepts returns on ballistic items. We do.** However, recertification X-Ray costs on returned ballistic items is 20%.
- Starting a return/exchange: Click here
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Just One Pack: Your All-in-One Expandable Hunting & Backcountry Solution
- Legendary Design, Updated: The Just One Pack is a long-standing Eberlestock design that underwent a complete overhaul in Fall 2024, making it lighter (almost a pound less) and more comfortable while adding capabilities.
- Primary Capability - Versatility: It's engineered for adaptability, functioning as both a compact day pack and expanding into a larger system for significant load transport.
- Expandable Load Hauling: Features an integrated expandable center mesh compartment accessed via vertical zippers. This allows the pack to transform its volume significantly, making it ideal for hauling bulky, irregular items like game quarters or extra gear for multi-day trips.
- Integrated Rifle Scabbard: Incorporates a secure, built-in rifle scabbard. It's updated and contoured to better center the rifle on your back, aiding hands-free travel and weight distribution. The scabbard is stowable when not needed.
- Load Support System: Utilizes an internal aluminum Intex No Shelf Frame designed to distribute weight evenly and provide substantial back support, even with heavy loads.
- Comfort Features: Includes an adjustable padded shoulder harness with turnover construction for comfort during extended wear and a Tri-Glide pull forward hipbelt system for quick, secure adjustment.
- Durable Construction: Built with 500D Cordura (solid colors) or a Microsuede Finish (camo colorways).
Eberlestock Just One Pack Review
What are some common accessories to add to the Eberlestock Just One Pack?
- Eberlestock Hydration System: Stay hydrated during demanding treks by integrating this system, available in multiple sizes, directly into the Just One Pack for convenient, on-the-move access to water.
- Eberlestock Lochsa Merino Brief: Ensures chafe-free, moisture-wicking comfort during long hikes and strenuous activity, forming the essential foundation for your layering system when using the Just One Pack.
- Eberlestock Camas Pant: Tackle rugged terrain confidently with these durable, water-resistant stretch pants, designed with an articulated fit for unrestricted movement while carrying the Just One Pack through challenging environments.
- Eberlestock Lochsa Merino 3/4 Pant: Delivers targeted warmth and moisture management below the knee, fitting seamlessly with boots and preventing overheating during active use with the Just One Pack, sometimes featuring zip-offs for easy layering changes.
- Eberlestock Lochsa Merino Zip Hoody: Provides adaptable mid-layer warmth with premium merino wool and easy venting via the zip neck, perfect for managing temperature during fluctuating conditions on multi-day trips with the Just One Pack.
- Eberlestock Lochsa Merino Baselayer Pant: Regulate lower body temperature effectively with these breathable, moisture-wicking merino pants, crucial for staying warm and dry during extended backcountry hunts or cold-weather excursions with the Just One Pack.
- Eberlestock Lochsa Merino Short Sleeve: Offers versatile, lightweight performance as a breathable base layer or standalone tee, keeping you cool and dry during high-exertion phases of your journey with the Just One Pack.
- Eberlestock Lochsa Merino Long Sleeve: Functions as a multi-tool base layer with full arm coverage for sun protection or layering, providing breathable comfort adaptable to various conditions encountered when using the Just One Pack.
- Eberlestock Trinity Peak Jacket 2.0: Offers superior waterproof (30K) and breathable (30K) protection with a lightweight, packable design that easily stows in the Just One Pack, ready to deploy when facing harsh mountain weather.
- Eberlestock Lochsa Merino Hoody: Combines lightweight (180 GSM) merino performance with added head and neck coverage, ideal for sun protection or light insulation during active pursuits with the Just One Pack.

Eberlestock Just One Pack Features & Specifications
The Eberlestock Just One Pack is a legendary design, significantly updated in Fall 2024 to be lighter (by almost a pound) and more comfortable while adding capabilities. Engineered for versatility, it functions as a day pack with a collapsed volume of 3580 cubic inches (58.7L) and expands via a central mesh compartment to a maximum volume of 6500 cubic inches (106.5L), making it suitable for hauling large game quarters or gear for multi-day trips. This expandable mesh section alone adjusts from 1080 c.i. (17.7L) to 4000 c.i. (65.5L). The pack dimensions are 24"H x 13"W x 7.5"D. It weighs 6 lbs 6 oz in solid colors and 7 lbs in camo patterns.
A core feature is the integrated, stowable rifle scabbard, updated to better center the rifle on the back for improved weight distribution and hands-free movement. Load support comes from the internal aluminum Intex No Shelf Frame. Comfort is enhanced by the adjustable padded shoulder harness featuring Turnover Construction and the Tri-Glide pull-forward hipbelt system for easy adjustment. The pack is built with durable 500D Cordura (solid colors) or Microsuede (camo). Additional features include hydration system compatibility, vertical and horizontal compression straps, a floating top lid, stretch side pockets, elastic bottle pockets, and spacious zippered side wing compartments. It is also compatible with Hunt EMOD Packs and Duffels.
Just One Pack Key Features:
- Expandable Capacity: Transforms from a 3580 c.i. day pack to a 6500 c.i. load hauler via a large central mesh compartment.
- Integrated Rifle Scabbard: Features an updated, built-in scabbard designed for centered rifle carry and hands-free travel; stowable when not needed.
- Internal Aluminum Frame: Utilizes the Intex No Shelf Frame for robust load distribution and back support.
- Updated Design (Fall 2024): Lighter weight and improved comfort compared to previous versions.
- Adjustable Harness & Hipbelt: Padded shoulder harness with Turnover Construction and a Tri-Glide pull-forward hipbelt ensure a comfortable and secure fit.
- Durable Construction: Made from 500D Cordura or Microsuede materials for longevity in the field.
What's in the box of the Eberlestock Just One Pack?
- (1) Eberlestock Just One Pack system
- (1) Integrated Rifle Scabbard (updated for better centering and stowable)
- (1) Internal Aluminum Intex No Shelf Frame (provides load distribution and support)
- (1) Adjustable Padded Shoulder Harness with Turnover Construction (offers comfort)
- (1) Tri-Glide Pull Forward Hipbelt system (facilitates quick adjustment)
- (1) Floating Top Lid
- (1) Expandable Center Mesh Compartment (designed for hauling bulky loads)
Eberlestock Just One Pack FAQs
What is the primary capability of the Just One Pack?
Its primary capability is variable capacity. It can function as a compact day pack and expand significantly to haul large loads, like game quarters or gear for multi-day backcountry trips.
What are the pack's dimensions and volume specifications?
Dimensions are 24 inches high, 13 inches wide, and 7.5 inches deep. The volume starts at 3580 cubic inches (58.7L) when collapsed and expands to a maximum of 6500 cubic inches (106.5L). The central mesh compartment expands from 1080 c.i. (17.7L) up to 4000 c.i. (65.5L).
What is the weight of the Just One Pack?
It weighs 6 pounds 6 ounces for Solid Colorways and 7 pounds for Camo Colorways.
Does the pack include a rifle carry system?
Yes, it features an integrated rifle scabbard. This scabbard has been updated to better center the rifle on your back for hands-free movement and improved weight distribution. It is also stowable when not in use.
How does the pack manage heavy loads?
It utilizes an internal aluminum Intex No Shelf Frame. This frame is designed to effectively distribute weight and provide substantial back support, even with heavy loads.
What materials are used for construction?
It's constructed with 500D Cordura for solid colors and features a Microsuede Finish for camo colorways.
What changed in the Fall 2024 update?
The pack underwent a complete overhaul, resulting in it being almost a pound lighter and more comfortable, while also adding features and capabilities like the updated scabbard and frame system.
How does the expandable compartment work?
By unzipping the vertical zippers on the main body, a large integrated mesh compartment is revealed. This allows the pack's central volume to expand dramatically for hauling bulky items.
Is the Just One Pack hydration compatible?
Yes, the pack is hydration system compatible and features features like elastic bottle pockets and spacious side wings that can accommodate hydration bladders.
Where can I purchase the Eberlestock Just One Pack?
The Eberlestock Just One Pack is available through authorized distributors of Eberlestock products. You can find it at reputable outdoor retailers, tactical gear suppliers, and online stores specializing in hunting and outdoor equipment. Atomic Defense is an authorized distributor offering the Just One Pack among other Eberlestock gear. Purchasing from an authorized distributor ensures you receive a genuine product backed by Eberlestock's warranty.
What is the correct name or term to use when referring to this pack?
The official product name is Eberlestock Just One Pack. Common and correct shorter versions include Just One Pack and Eberlestock Just One. Using the descriptive term Eberlestock Just One Backpack is also acceptable and widely understood.
- Eberlestock J34 (and related variations like J34 Just One, Eberlestock J34 Backpack,Eberlestock J34 Just One Pack, etc.)
- Eberlestock Just One Hunting Pack
Here's what those terms generally mean:
- J34: This refers to the model number of a popular previous version of the Just One pack. Searches using "J34" are likely looking specifically for that older model, not the latest iteration (which uses SKU J24 based on product documents).
- Eberlestock Just One Hunting Pack: This is a descriptive phrase highlighting the pack's primary intended use (hunting) rather than its official product title.
Using the official terms like "Eberlestock Just One Pack" or "Just One Pack" will help ensure you are referring to and finding information about the correct, current model.
- We are a Small Business: We do the most we can to help with return costs, but we are not Amazon and cannot take hits or losses like Amazon.
- Lifetime Warranty: Atomic Defense will always stand behind our products. Our lifetime warranty covers any defects and ensures that you never need to worry about parts or the quality of your orders for the entire life of the product.
- Wrong Items: Atomic Defense takes pictures of orders before they are packaged and shipped. We pay for return, recertification and exchange shipping costs if we ever make a mistake on your orders.
- Rules for Returns: We may deduct refurbishing costs, plus materials and labor, of used products or modified products. This includes, but is not limited to; products with residue, smells, scratches, missing parts, debris, dents and damage. **We reserve the right to refuse returns.
- Packaging: Ensure returns are packaged safely with thick padding on all six sides. Failure to correctly package returns may damage products and will be deducted from Buyer's account.
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Start a Return or Exchange
Visit our return portal to begin the self-serve return/exchange process.
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General Products:
- Must be within 30 days of package delivery.
- No need to purchase a shipping label! Atomic Defense will give you a pre-paid one.
Ballistic and Bulletproof Products:
- Most companies will not accept any returns on ballistic or bulletproof items. We offer recertification as a courtesy.
- Must be within 30 days of package delivery.
- No need to purchase a shipping label! Atomic Defense will give you a pre-paid one.
- A re-certification cost of 20% applies to returns of ballistic and bulletproof products.
- The 20% recertification covers the cost of ensuring the armor is safe. Usually starting with X-Raying the armor for cracks underneath the coating, inspection for damage, and water damage testing. Without this 20%, we would not be able to offer returns on armor.
- There is no way for us to know how or if it was used once shipped, and we have to consider them unsafe until retested, inspected and certified.
- Exchanges and non-ballistic products do not have a re-certification cost.