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Efficiently designed for those that like to move fast and light.
The K4 3600 is an ideal pack system for ultralight adventures up to 3-4 days.
Load Rating
150+ Pounds
Total Weight
5lb, 8oz
Total Internal Capacity
4,268ci
Expanded Dimensions
8" x 37" x 10.5"
PACK FEATURES
Designed for simplicity, versatility, and efficiency.
Any Load. Any Time.
Any Load. Any Time.
Quickly separate the bag from the frame and carry any load between the bag and frame. Compression straps built into the frame offer secure compression for quarters, boned-out meat, load cells, or similar items.
Roll-Top Access & Compression
Roll-Top Access & Compression
All K4 Bags feature roll-top access into the main bag. The roll-top also allows you to expand/contract the pack volume as more/less space is needed.
Efficient Zip Access
In addition to the roll-top access into the main bag, all K4 Packs feature front zip access. The K4 5000 has horseshoe-shaped zip access, while the K4 3600 & K4 7200 feature a full-length straight side zip.
Front Stretch Panel
Front Stretch Panel
A zippered front panel built with specialized stretch fabric offers quick and secure access to items you need throughout the day, such as an extra layer, a glassing pad, gloves, or similar items.
Full-Length Side Pockets
Full-Length Side Pockets
Every K4 Pack features full-length, zippered side pockets on both sides of the bag. The pocket is pleated, offering spacious storage for full-size spotting scopes, even when the main bag is full.
Top-Entry Side Pockets
Top-Entry Side Pockets
Built with stretch material, both sides of every K4 bag feature top-entry side pockets that work great for tripods, trekking poles, water bottles, and the like. The pack's upper side compression strap keeps tall items secure.
Always Accessible
Dual-compartment side pockets feature a quick-access compartment, keeping essential items easily accessible while you are wearing the pack. Perfect for your headlamp, gloves, phone, snacks, or other commonly used gear.
Secure Attachment
Secure Attachment
Laser-cut MOLLE panels on the hipbelt and shoulder harness offer secure mounting of K4 Accessories, as well as 3rd-party MOLLE-compatible accessories and holsters.
K4 Lid Included
This K4 Pack System includes the K4 Lid, which offers two storage compartments that add nearly 650ci to the pack's capacity. The lid also works great as a compression panel when packing out a skull and antlers at the end of a successful hunt.
Water Bladder & Wet Storage
Water Bladder & Wet Storage
All K4 Bags feature a dedicated water bladder compartment. The waterproof lining and bottom drain grommet keep your gear dry if your bladder leaks. The area also works great to keep wet items (such as a tent fly) separate from the dry gear inside the main bag.
Built for Bows. And Rifle Ready.
Built for Bows. And Rifle Ready.
Integrated compression straps on the face of the pack work great to secure your bow to the bag. For rifles, we have a Quick-Release Rifle Carrier accessory, or you can also strap your rifle directly to the face or side of the pack.
Lock-Down Every Load.
Lock-Down Every Load.
All K4 Packs ship with a pair (1 male, 1 female) of accessory locking buckles, which are perfect to secure awkward loads. Use them on shed antlers, your weapon, or more. Additional locking buckles can be added, if needed.
MADE IN THE USA
All of our Packs and Pack Accessories are built in our hometown of Boise, Idaho, USA. We only use the highest quality materials — such as MIL-SPEC 500d Cordura, YKK Zippers, and our custom-engineered carbon fiber frame stays.
K4 FRAME
Built for comfort, performance, and durability, with a proven load rating of 150+ pounds.
PERFORMANCE IS THE PRIORITY
Learn what sets K4 Pack Systems apart...
| K4 2200 | K4 3600 | K4 5000 | K4 7200 | |
|---|---|---|---|---|
| Weight: Bag Only | 1lb, 10oz | 2lb, 1oz | 2lb, 6oz | 2lb, 8oz |
| Weight: Bag + Frame | 4lb, 9oz | 5lb, 0oz | 5lb, 5oz | 5lb, 7oz |
| Weight: Bag + Frame + Lid | 5lb, 1oz | 5lb, 8oz | 5lb, 13oz | 5lb, 15oz |
| Capacity: Bag Only | 2,192ci | 3,620ci | 5,010ci | 7,180ci |
| Capacity: Bag + Lid | 2,840ci | 4,268ci | 5,658ci | 7,828ci |
| Dimensions: Expanded | 7" x 25" x 10.5" | 8" x 37" x 10.5" | 9.5" x 39" x 10.5" | 13" x 43" x 10.5" |
| Dimensions: Compressed | 2" x 25" x 10.5" | 2.5" x 25" x 10.5" | 3" x 25" x 10.5" | 3.5" x 25" x 10.5" |
WHERE CAN I TRY A PACK?
We do not have dealers or retailers and only sell direct-to-consumer online. (If you are in the Boise area, you can "try and buy" at our shop.)
We do have a 30 Day Trial Period, allowing you to receive the pack, test the fit and function, and make sure the pack is exactly what you need. LEARN MORE
WILL YOUR PACKS FIT ME?
Yes! With 4 frame height options and 5 hipbelt sizes, the K4 Frame included with all of our K4 Packs can fit just about anyone. FIND YOUR SIZE
DO YOU HAVE A WARRANTY?
Absolutely. Our lifetime guarantee covers defects in materials and workmanship for the lifetime of the product, for the original owner. OUR GUARANTEE
WHERE ARE YOUR PACKS MADE?
We build all of our K4 Packs & Accessories in Boise, ID, USA. We also source US-Made materials whenever possible. MATERIALS & PRODUCTION
HOW DO I _________ WITH A K4 PACK?
We have well over 20 "how to" videos that demonstrate just about everything you may want to know how to do. See all of the How-To Videos for K4 Pack Systems.
I STILL HAVE QUESTIONS — CAN YOU HELP ME?
As a small company, we pride ourselves on offering personal service, and we would love to help you out.
Everyone on our small team is involved with building, testing, and the use of our products for their personal hunts. WE ARE ALL EXPERTS ON OUR GEAR, AND WE ARE HERE TO HELP.
Give us a call at 208-995-4688 or email support@exomtngear.com and we'd be glad to help with any questions you have.
You can also explore more answers to common questions on our FULL FAQ PAGE.
Real World Reviews
After 60 days of using and abusing the K4 Prototype last fall, I can confidently say that it is the most comfortable, complete, and capable hunting pack that I have ever owned. It was clearly created for serious hunters, by serious hunters.
The new K4 is the best pack I have used to date. I used a K4 Prototype on 5 big game hunts this past fall and could tell that it was strategically built for comfort and is tough enough to withstand the most extreme hunting and backpacking adventures.
I love the simplicity of the K4! It has everything you need, and nothing you don’t! After testing the K4 Prototype last year, I was thrilled with the new system to detach the bag from the frame. And the new hipbelt design provides a noticeable increase in comfort.
A
For years I used a K3, that I loved. I gave it to my son inlawand now he loves it, Need another pack so I purchased a K4 3600. It works great use it for hunting and NRL Hunter series love the fit, Thank you EXO Mtn Gear!
B
I’ve had the K4 3600 for a few years. Packed out countless elk, deer and a lot of sheds! It is by far the best pack I’ve ever owned. It balances the weight evenly through your body so those 100 pound pack outs suck just a little bit less! Plus it compresses down really nice for day trips/ scout trips. I would highly recommend these packs. They are worth every penny!
T
This is my third EXO pack and for good reason. They’re all around the best pack I’ve found. The K4 series has some features I like and they’ve changed some that I miss. The new longer pockets for tripod and spotter are great. The integrated Nalgene holder is great. The adjustable frame stays are great. The way the pack comes off the frame and meat shelf are way better.
A few things I miss. The stretch pocket on the K3 was my go to for quick access for my mid layer, beanie, and luco tape. The lumbar foam was much more comfortable even under load and after breaking than the K4. The lid quick disconnects were muck more user friendly than the K4.
My K3 had become my training pack and loaner when I share camp with unequipped friends and family. My K4 is my hunter and I love it. Maybe Steve will build a hybrid for me lol. Customer for life either way.
Z
I wore this pack for hundreds of miles this spring, shed hunting, and had it loaded heavy on many different days. Best pack I’ve ever worn without a doubt!
I
I got this pack for an Elk Hunt with a group of a young hunter and works great, this pack is very versatile lightweight and very comfortable to wear, all the accessories that you can add to make it even better.
I will recommended 100 % Customer service . Mike and Jack were very helpful !
