caribou gear|SKU:83-8154-var-51595-9e13e7

Koyukon 40L Waterproof Duffel — TPU-Sealed Dry Bag for River Hunts

Field-Tested Waterproofing for Multi-Day River Hunts

TPU-sealed core fabric — No PVC — holds up season-after-season through heat and cold
Four tie-down points — Strap to boats, ATVs, bush planes, and rafts
Air release valve — Compress gear tight in confined cargo spaces
Backpack carry straps — Haul from river to camp hands-free
Reflective logos — Locate your bag in the darkest conditions
  • Free Shipping -- Fully insured — signature required
  • Free Pre-Purchase Consult -- Talk to a technical gear expert before you buy
  • Authorized Dealer Warranty -- Full manufacturer warranty — no gray market

$224.99

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In the box

  • Koyukon 40L Waterproof Duffel Bag
Koyukon Waterproof Duffel Bag 40L
Koyukon 40L Waterproof Duffel — TPU-Sealed Dry Bag for River Hunts
$224.99

Field-Tested Waterproofing for Multi-Day River Hunts

Caribou Gear built the Koyukon 40L Duffel after years of month-long river hunting and fishing expeditions, rejecting heavy, bulky dry bags that fail when it matters. This rugged duffel uses advanced core fabric multi-treated and sealed with premium TPU waterproofing—no delicate PVC here. Backpack-styled shoulder straps and fixed side handles make transport effortless whether you are unloading from a bush plane or hauling gear out of a raft. Four tie-down loops let you secure it to ATVs or boat frames, while the side air release valve compresses gear in tight quarters. It is wilderness-grade gear built for serious hunters who expect their equipment to survive real-world abuse.

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TPU Waterproof Sealed
4-Point Tie-Down Loops
Side Air Release Valve
Backpack Shoulder Straps
40L
Total Storage Capacity
4
Tie-Down Loop Locations
2
Available Color Options
Dry Gear After a Week of Rapids — Not Just a Claim on the Tag

Dry Gear After a Week of Rapids — Not Just a Claim on the Tag

Most dry bags promise waterproof performance and deliver soaked gear after a week in a raft. Caribou Gear built the Koyukon 40L after month-long river hunting trips where other bags failed repeatedly. The result is advanced core fabric multi-treated and sealed with the finest TPU waterproofing available — no PVC, which is lightweight, toxic, and delicate under real field stress. Hunt Premium carries this bag because it was tested in the actual conditions that matter: strapped to a bush plane float, bounced in a raft through rapids, and hauled into backcountry camps where gear failure isn't an option. If it doesn't hold up on the river, it doesn't earn its spot.

Carry It Like a Pack, Strap It Like Cargo

Carry It Like a Pack, Strap It Like Cargo

Backpack-style shoulder straps and fixed side handles make the 40L easy to haul from a raft to a backcountry camp or through an airport terminal. Removable strap features let you adapt the carry for the moment — over the shoulder on a portage trail or by the handles when loading into a float plane. Four tie-down loops at separate locations let you secure the duffel to a boat, canoe, ATV, or motorcycle frame without it shifting on rough terrain. Side Velcro straps hold a fishing case or tripod externally, keeping your hands free and your essential gear accessible without digging through the main compartment.

Compress, Locate, and Keep Moving

Compress, Locate, and Keep Moving

The air release valve on the side lets you compress your gear tight in confined spaces — a packed raft, a bush plane cargo bay, or the bed of a truck. Reflective logos mean you can locate your duffel in the dark after a late-evening arrival at camp without a headlamp. Available in Alpine Green and Storm Gray, the 40L holds enough for extended river trips without the bulk that makes larger dry bags awkward to handle. This is gear that earns its spot through function, not marketing — field-tested on actual month-long hunting and fishing expeditions where waterproof isn't a suggestion, it's the minimum requirement.

Transport & Mounting Compatibility

Designed to integrate seamlessly with common backcountry transport methods and gear setups.

  • Fits in standard float plane cargo compartments
  • Straps securely to standard ATV or motorcycle frames
  • Compatible with standard boat and canoe tie-down points

Built for the Backcountry

From float planes to rafts, this duffel handles the logistics of remote, wet environments.

Bush Plane Float Trips
Multi-Day River Rafting
ATV Deep Woods Packing

Full specifications

At a glance

Warranty
See product page
Full specifications6 data points across 4 categories

Dimensions

Capacity40L

Power & Performance

WaterproofingMulti-treated and sealed using the finest TPU waterproofing available
CompressionAir release valve on the side

Materials

Core FabricTechnologically advanced core fabric
ExteriorNo PVC

Compliance & Warranty

WarrantySee product page

The Hunt Premium Promise

Every item we stock is vetted for real-world performance. If it does not hold up in the field, we do not carry it.

Authorized DealerFull manufacturer warranty honored on every product we sell—no gray market risk.
Free ShippingShips free with fully insured delivery and signature required.
30-Day ReturnsReturn gear in original packaging within 30 days if it does not meet your standards.
★★★★★
“Took the Koyukon 40L on a 9-day float hunt in Alaska. Rained six of those days, bag got strapped to the raft frame and dunked in rapids twice. Everything inside stayed bone dry — clothes, sleeping bag, electronics. The tie-down loops held solid the whole trip. This is the first dry bag I've owned that actually delivered on waterproof.”
F
First L.Bozeman, MT

After many years of month-long river hunting and fishing adventures, Caribou Gear took a new approach to duffel and roll-top bags, putting all gear through extreme tests in function and durability. When it comes to dry bags, they found that other brands were heavy, bulky, difficult to use, costly, and not completely waterproof (as advertised).

They didn’t hold back in making the finest, most durable duffel bag available.

Koyukon Waterproof Duffel Bag 40L made with a fine balance of technologically advanced core fabric, which is then multi-treated and sealed using the finest TPU waterproofing available.

They didn’t want PVC dry bags that are lightweight, toxic, and delicate.

They added backpack-styled shoulder straps and carrying handles to the 40L duffel bag for easy transport. It also has convenient removal features and fixed side handles, which is important at the airport or when getting in and out of a boat or raft. 

The 40L and 70L offer tie-down loops at four locations to securely strap the duffel bag to a boat, canoe, bush plane float, ATV, or motorcycle frame

Also included are side Velcro straps for your accessories, such as a fishing case or tripod, and reflective logos to locate your gear easily in the darkest of nights. Compress your gear in tight quarters (with the combined use of the air release valve on the side). 

Koyukon Waterproof Duffel Bag 40L is pliable in the coldest weather and tropical conditions and super tough. It is designed for hardcore hunters and outdoor enthusiasts. Koyukon Waterproof Duffel Bag 40L offer unmatched performance in the field and stylish looks for everyday use. 

Built to handle environmental extremes, protecting your valuable clothing and gear against rain, wind, and snow.

FEATURES: 

  • Removable carry handle and backpack straps
  • Fixed side handles
  • Heavy-duty stitching throughout 
  • 100% Waterproof fabric
  • Upper – Heavy duty abrasion resistant TPU coated 840-denier nylon 
  • Bottom – Super duty abrasion resistant black TPU coated 1680-denier nylon 
  • 3-count external 100% waterproof marine grade zippers (includes silicone lubricant) with welded grip slider
  • Securely lock duffel bag with lock assist D-ring 
  • Securely tie down using four side loops 
  • 2-count light reflective “zipper” closure assist handles 
  • Handles and Straps are reinforced at all weight-bearing contact points with a “heavy-duty” internal patch reinforcement
  • Side-mounted air release valve, designed to expel air to compress content or add air
  • Light Reflective Stylish Logos – This unique, easy-locate feature makes it possible to see your dry bags in the darkest of nights.  
  • 4 count external side mount fishing rod or tripod velcro straps w/silicone grip
  • SKU 8222 – Green
  • SKU 8185 – Gray

Available Sizes

40L – 24″ x 13″ x 10.5″  Weight 2lb 13oz 
70L – 32″ x 15″ x 12″  Weight 3lb
90L – 37″ x 14″ x 12″  Weight 3lb 6oz

Duffel Bag Removable Handle Systems

40L – Available with removable backpack shoulder strap and carry handle. 
70L – Available with removable carry handle only.
90L – Available with removable carry handle only.

All duffel bag sizes come with fixed end handles.

**40L meets most federal regulations for carry-on luggage**
Note; All Koyukon duffel bags have an air release valve, allowing for tight compression. To compress completely open side valve and compress content, then tighten valve before releasing.   

What’s the difference between PVC and TPU

TPU is known for being extremely durable, non-toxic and remains flexible in cold temperatures. TPU resists oxidation and chemical breakdown, extending the life expectancy far beyond PVC. TPU treated fabric has the ability to withstand extended wear, puncture and pressure damage.

PVC is known to be toxic and not recommended for extended use or food storage. PVC becomes brittle in cold temperatures, easily fades, punctures and cracks.

Additional information

Color

Alpine Green, Storm Gray

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Frequently Asked Questions

Other dry bags cost less because they use PVC — lightweight, toxic, and delicate under field stress. The Koyukon uses advanced core fabric sealed with TPU waterproofing, built from month-long river hunting trips where cheaper bags failed to stay waterproof. You're paying for a bag that actually keeps your gear dry through rapids, rain, and bush plane cargo holds. At $224.99, it replaces multiple failed dry bags over the years.
Hunt Premium is an authorized dealer for every brand we carry. The Koyukon 40L is backed by Caribou Gear's manufacturer warranty. We ship fully insured with signature required, and you have 30 days to return it in original packaging if it doesn't meet your expectations. No gray-market risk, no voided warranty — the same protection you expect on any serious hunting gear investment.
The 40L holds enough for extended river hunting and fishing trips without the bulk that makes larger dry bags awkward in boats and bush planes. The air release valve lets you compress gear tight in confined spaces. If you're packing for a week-long backcountry elk hunt with minimal clothing and layered gear, 40L works for most hunters. For longer trips or hunters who carry more bulk, consider stepping up to the 70L size.
PVC dry bags are lightweight and initially flexible, but they're toxic under heat exposure and delicate under real field stress — cracking and failing after repeated use in sun and cold. The Koyukon uses advanced core fabric multi-treated and sealed with TPU waterproofing, which holds up season-after-season through temperature swings, UV exposure, and rough handling on river trips. Caribou Gear specifically rejected PVC because it doesn't survive month-long expeditions.
The Koyukon 40L is built for it. Four tie-down loops at separate locations let you strap it securely to a bush plane float or cargo rack. Fixed side handles make loading and unloading straightforward. The reflective logos help you spot it in low light after a late arrival at a remote strip. The 40L size fits in most bush plane cargo configurations without wasting space — compress it down with the air release valve and strap it in.
Side Velcro straps let you secure a fishing case, tripod, or other accessories to the outside of the duffel without opening the main compartment. Combined with the four tie-down points, you can configure the bag for boat transport, ATV racks, or motorcycle frames. The external attachment system keeps frequently needed items accessible and your hands free during portages or loading.
SKU: 83-8154 Categories: , Brand:

The Hunt Premium Promise

Every item we stock is vetted for real-world performance. If it does not hold up in the field, we do not carry it.

Authorized Dealer Full manufacturer warranty honored on every product we sell—no gray market risk.
Free Shipping Ships free with fully insured delivery and signature required.
30-Day Returns Return gear in original packaging within 30 days if it does not meet your standards.

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