JayJays Beast Bergen - Multicam | Military Mart
- Low stock - 1 item left
JayJays Beast Bergan - MultiCam (125L - 150L)
RRP £625
Used only a handfull of times and comes with added waist belt (see pics )
The JayJays Beast Bergan isn't just a rucksack; it’s a masterclass in load-carriage engineering. Developed over three years with direct feedback from elite Jungle Warfare instructors, "The Beast" was designed to solve the specific problems faced by modern soldiers operating in the most punishing environments on Earth.
Whether you are navigating dense jungle or conducting long-range patrols, this Bergan provides the capacity, durability, and ergonomic support required to carry heavy loads over distance without compromising your agility.
Revolutionary External Frame Design
At the heart of the Beast is a high-density polymer frame, the same spec issued to and drop-tested by the USMC.1 Unlike traditional internal frames, this external system ensures maximum airflow across your back, significantly reducing heat fatigue.2 To solve the common issue of "frame squeak," JayJays has integrated specialized anti-squeak pads on the webbing straps, ensuring your movement remains silent during tactical operations.3
Massive Capacity & Modular Flexibility
With a base capacity of 125 Litres, the Beast is built for long-duration missions.4 However, its modular design allows for even more scale:
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PLCE Compatibility: While it features integrated mesh bladders for a slim profile, it is fully compatible with issued PLCE side/rocket pouches, boosting capacity to a massive 150 Litres.5
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Belt Kit Ready: The profile is intentionally low but wide, ensuring the weight sits perfectly when worn alongside a full belt kit.
Field-Proven Features
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Spacetec Padded Straps: Extra-wide shoulder straps distribute weight evenly, preventing "dig-in" during 24+ hour tabs.6
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Basha & Essentials Storage: A large, heavy-duty zipped Basha pouch on the front allows for instant access to your shelter, while a triple-pouch array at the bottom keeps food, water, and cooking gear organized.7
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Wet Weather Ready: All compartments feature large, covered drain holes, and the frame padding is covered in PU fabric to minimize friction even when your uniform is soaking wet.8
Key Technical Specifications
| Feature | Specification |
| Brand | JayJays |
| Capacity | 125 Litres (Expandable to 150L) |
| Color | Genuine MultiCam |
| Frame Type | High-Density Polymer (USMC Drop-Tested) |
| Zips | Heavy-duty YKK Reverse Zips |
| Warranty | Genuine JayJays Lifetime Warranty |
| Weight Distribution | Designed for use with belt kit |
Why Choose the JayJays Beast?
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Built for the Jungle: PU-coated fabrics and mesh "stow-flat" side pockets prevent water retention and snagging.
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Easy Access: The shaped top lid features dual-access zips, allowing you to reach kit whether the lid is open or closed.9
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Extreme Durability: Features a reinforced base for superior abrasion resistance against rocks and hard ground.10
Please Note: The Bergan comes equipped with mesh side pockets. Issued PLCE Rocket/Side pouches are not included but can be attached to the side fixings.
Domestic Shipping
We mainly use Royal mail 48 for items under 1kg and DPD for items over this weight. We may change this at any time dependant on service availability and destination.
We send out the majority of orders the same day of receiving upto 1pm
We also offer an express shipping service which ensures your delivery is prioritised for delivery as quick as possible and usually delivered the next working day.
We do offer Saturday delivery and timed delivery but prices are on application.
For US and Canada we mainly use Fedex priority and deliveries are usually recieved within 2 to 5 days
For EU deliveries we mainly use DPD by road and usually takes from 3 to 7 days, your parcels are not necessarily delivered by DPD in your county and the parcel may be passed to your countries nominated carrier.
Rest of the World, we have availability with all the major carriers and each is nominated dependant on the best service for the receivers destination.
If you can not get an automated shipping quote please contact us for a spot shipping quote.
If you are not entirely satisfied with your purchase, we're here to help.
You have 7 calendar days to contact us and arrange for the item to be returned which will be received by us no longer than 30 days from initial order. To be eligible for a return, your item must be unused (if applicable) and in the same condition that you received it. Your item must be in the original packaging (if applicable).
There is a £3.99 charge to use our returns facility. (UK domestic only)
To return your item(s) please click here
When sending items back please ensure that the proof of purchase (or copy) is within the package with any instructions if applicable.
Once we receive your item, we will inspect it and notify you that we have received your returned item. We will immediately notify you on the status of your refund or exchange and if applicable we will initiate a refund via your original method of payment.
If you opt for an exchange we will contact you for further postage costs. (price dependant on weight/destination).
If applicable you will receive the credit within 7 days, depending on your card issuer's policies. Contact Us If you have any questions on how to return your item to us.
🪖 MilitaryMart Size Guide (Click to Expand)
Military clothing sizes are listed as Height / Chest (for jackets and smocks) or Height / Waist (for trousers).
Example: 180/96 fits someone around 5'11" tall with a 38" chest.
| NATO Size (Label) | Approx Height | Chest / Waist (in) | Generic Size |
|---|---|---|---|
| 160 / 88 | 5'3"–5'5" | 34–35" | Small (S) |
| 170 / 88 | 5'7"–5'9" | 34–35" | Small (S) |
| 170 / 96 | 5'7"–5'9" | 37–38" | Medium (M) |
| 180 / 96 | 5'10"–5'11" | 37–38" | Medium (M) |
| 180 / 104 | 5'10"–5'11" | 40–41" | Large (L) |
| 190 / 96 | 6'2" | 37–38" | Medium (M) Tall |
| 190 / 104 | 6'2" | 40–41" | Large (L) Tall |
| 180 / 112 | 5'11" | 43–44" | X-Large (XL) |
| 190 / 112 | 6'2" | 43–44" | X-Large (XL) Tall |
| 200 / 120 | 6'4"+ | 46–48" | 2X-Large (2XL) |
⚙️ Sizing Tips
- The first number is your height in cm.
- The second number is your chest or waist in cm.
- Military gear is usually cut roomy for layering and movement.
- If you’re between sizes, go down for a closer fit or up for layering.
- Example: 5'11" tall with 40" chest → 180/104 (Large).
