K4 3600 Pack System

Sale Price

Regular Price $675.00
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On Sale
Color
Coyote
Ranger
Fusion
Hipbelt Size
Frame Height

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Ships in 4-6 Business Days

HAVE A QUESTION?

Email support@exomtngear.com or call us at 208-995-4688.

Made in the USA  30 Day Free Trial  Lifetime Guarantee

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.

Total Weight

5lb, 8oz

Total Internal Capacity

4,268ci

Expanded Dimensions

8" x 37" x 10.5"

View All Specifications

PACK FEATURES

Designed for simplicity, versatility, and efficiency.

K4 FRAME

Built for comfort, performance, and durability.

K4 Frame

  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"

Frequently Asked Questions

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

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

Absolutely. Our lifetime guarantee covers defects in materials and workmanship for the lifetime of the product, for the original owner. OUR GUARANTEE

We build all of our K4 Packs & Accessories in Boise, ID, USA. We also source US-Made materials whenever possible. MATERIALS & PRODUCTION

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.

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

Colton Heward

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.

- Colton Heward
Paul Servey

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.

- Paul Servey
Steve Evans

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.

- Steve Evans

Customer Reviews

Based on 66 reviews
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Neil Dalby
Fantastic pack

Just finished a relatively heavy (70lbs) overnight hike in the PNW, pack was great, no knee or back pain, felt like I could have taken more weight. Did a similar hike last year with an Eberlestock FAC track, which is decent enough, but the Exo K-4 is in an entirely different league. Would definitely recommend this pack system to anyone.

E
Eric Wurtz
Lives up to the hype!

I’ve used this pack on 3 successful hunts so far. From a small javelina to packing out a full mature mule deer on my own this pack has performed as expected. I had the k3 which was a great pack, but the comfort of the k4 is significantly better. I had the 5000 and exchanged for the 3600 since I broke down and was realistic in not going to backpack in somewhere for more than 3-5 days. I haven’t missed the extra space so far. My only suggestion for future changes to the pack would be two way zips on all the zippers. Since the lid is larger I have to unclip it to get to the zippers to the from stretch and side pockets if the pack is not full (which it is not most the time for me). I’ll have this pack for the rest of my life/will pass to my kid when he is ready. Buy once cry once is definitely worth it

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Chris Cloutier
A great decision.

Needed a pack for an Idaho Pan Handle DIY elk hunt. After lots of research, and looking at a friends EXO pack, I locked in on the 3600. Couldn’t have been happier, and as luck would have it, got to pack out an awesome 5x5. Pack performed like a dream, picked up the crib to go with it, and swapped out the bag for the crib on the second trip out to the truck. EXO’s customer service is second to none, extremely helpful and responsive. Thanks so much EXO!

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Mike Rust
Capable Performance Plus….!

2023 was for me, “The year of the Sheep”, with hunts in 3 countries (US/British Columbia/ Sonora), both work and play. I needed my recently acquired K4 to act as both a day and backpack for the 7 hunts. It’s performance (including fit), was nothing short of perfection. In addition, it was also my main flight carryon item, and was never questioned. Post season, removed the bag, threw it in the washing machine and pulled it out none the worse for wear!

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Mark Meinders
K4 is the best yet!

My prior bags were a KUIU and both K3 4800 and 3200. When I switched to Exo from KUIU it was night and day. With the K3 I could carry twice the weight twice as far and with half the discomfort versus the KUIU. The frame moved with me but was super stable. My one issue with the K3 was the hip belt, which tended to slide down no matter how tight. I tried the K4 frame since so much of the development work addressed this problem. Wow!!! Exo nailed it. The K4 hip belt never slides down and does a great job of transferring weight. I run a 3600 bag and will say this is hands down the most comfortable and capable backpack I have ever owned. I also really like the change on the bags from vertical sleeve to side zip pockets. The belt's Molle system is great because I can run any attachment I want, regardless of brand. Which I actually do because if I had to offer one gripe about the new K4 system, it has nothing to do with the pack/frame, but the hip pouch accessory. (Please bring back the velco and inserts from K3)