Kakwa 55
The updated 2025 model has larger shoulder strap pockets, larger hipbelt pockets, a more ergonomic design for the hipbelt and shoulder straps, and 1 oz reduction in weight. Versions that are out of stock will be re-stocked in mid-May.
The Kakwa 55 is our premium ultralight, multi-day pack designed from the first principles of load carrying and ergonomics to provide the greatest function, comfort and usability for an ultralight pack. Developed from Dan Durston’s attention to detail and thousands of miles of backpacking experience, the Kakwa 55 has class leading quality, load carrying, materials, and pocket design while weighing under 2 lbs (900 g).
LOAD CARRYING
The Kakwa 55 brings genuine load carrying capability into the sub 2 lbs weight class.
Other packs this light generally sacrifice load carrying ability by omitting load lifters, lacking horizontal structure, and relying on less ergonomic shoulder strap and hipbelt shapes.
The Kakwa 55 solves this tradeoff through more efficient design and advanced materials including UHMWPE fabric and hollow aluminum tubing. Hollow aluminum tubing is a more efficient use of structural weight than the solid metal bars found in competing packs. We use this material to create a rigid frame with both vertical and horizontal structure at the same or less weight than competing packs that only have vertical structure.
This frame connects directly to the hipbelt for maximum load transfer and directly to the load lifters, which are rare on packs this light yet highly functional for shifting more of the weight off your shoulders and onto the hips. A capable structure is nothing without an ergonomic connection to your body, which is why the shoulder straps have a carefully developed S shape to contour around your upper body, while the hipbelt uses a dual strap design which cups your hips and has reverse pull 2:1 leverage for easy tightening. The result is a pack that comfortably and effectively manages loads up to 45 lbs.
EFFICIENT ACCESS
Efficient access to your gear is a hallmark of ultralight pack design as it allows you to spend more time covering miles instead of digging through your pack.
What is needed is not a high quantity of pockets but rather a pocket layout that has been carefully considered to compliment and allow for a diverse range of storage possibilities while remaining simple enough to be easily organized.
For this, the Kakwa 55 has four types of pockets to optimize on-the-go access to your gear. First are the hipbelt pockets, which are designed to reliably operate one handed and easily accommodate medium sized items such as snacks, sunscreen, phones, and headlamps. That storage is augmented by dual top opening shoulder strap pockets which provide an ideal place for your phone for quick photos and navigation. These pockets also work well for small water bottles, sunglasses, and bear spray.
Additionally there is the innovative QuickPocket which consists of an easily reached compartment in the sidewall of the left side pocket. This allows you to stow and quickly access even larger items than normally possible, such as hats, mitts, maps and bulky snacks. Finally, a large mesh style front pocket quickly swallows the largest items like rain jackets, tents, and cook kits.
Collectively, the Kakwa’s pockets are carefully considered so you can hike with maximum efficiency.
BackpackingLight
Most Comfortable
"The Kakwa is one of the most versatile and comfortable packs I've ever used for loads exceeding 35 lbs....this pack has my favorite carry feel".
Section Hiker
10 Best Ultralight Backpacks
"The low weight is impressive for a framed pack....and it provides excellent weight transfer to the hips. The pocketing is fantastic for accessing what you need during the day without stopping."
The Trek
I Could Not Be Happier
"I’ve become a huge fan. It has smart places to put all the stuff, and carries all that stuff comfortably. I could not be happier to have it for the remaining 2,000 miles of the Eastern Continental Trail this winter."
Adventure Alan
Incredibly Well Designed
"The Kakwa has a famously excellent load carry. The whole setup is just so dang comfortable and user-friendly. It is in contention for best ultralight backpack on the market."
MATERIALS & QUALITY
In our backyard in the Canadian Rockies we often spend more time off trail than on, so durability in materials and construction is a top priority. With the Kakwa 55 we are using Ultra 200X and UltraGrid fabrics from Challenge Outdoor, where the face fabric is partly (UltraGrid) or dominantly (Ultra 200X) woven UHMWPE fibers which are several times stronger and more abrasion resistant than traditional nylon pack fabrics. The Ultra 200X material is laminated with an eco-friendly adhesive to a film to create a waterproof fabric, while UltraGrid uses a PU coating for waterproofing.
Simply using a tough main fabric is not enough if the pack has vulnerable aspects in the stitching, mesh materials, or construction. That's why the Kakwa 55 is fully double stitched with heavyweight thread and uses stronger folded seams. Pocket elastics are a common failure point, so the Kakwa uses protected elastics inside the seams rather than using exposed elastic edging. Lastly our front pocket avoids easily damaged high stretch mesh and instead uses a much tougher low stretch knit mesh while creating generous volume through shaping.
Ultra Fabrics
The Ultra 200X fabric option is dominantly woven UHMWPE fibers (more commonly known by the brand name Dyneema®) which is several times stronger and more abrasion resistant than traditional nylon pack fabrics. This material is laminated to a film backing to make the material waterproof.
The Kakwa 55 is also available in a more affordable UltraGrid version which uses a 200D nylon fabric interlaced with a UHMWPE ripstop. While not as tough as Ultra 200X, it is still quite a tough fabric.
Hollow Aluminum U Frame
The hollow aluminum inverted U frame provides vertical and horizontal structure at less weight than frame stay systems for more effective load transfer and comfort at loads up to 45 lbs / 20 kg.
Dual Strap Reverse Pull Hipbelt
This hipbelt design cups your hips, and makes tightening the belt much easier with 2:1 tightening leverage and an ergonomic direction of pull.
Shoulder Strap Pockets
These pockets provide an ideal place for your phone, bear spray, sunglasses, small water bottles and more. We attach them permanently for a more solid and user friendly connection.
Quick Pocket
The Kakwa's unique Quick Pocket is a double layer pocket that can hold tall objects inserted from the top, while a separate compartment accessed by the front zipper is easily opened wearing the pack - providing quick access to larger items like hats, mitts, and maps.
Specifications
SPECIFICATIONS
Complete Pack (oz)
Ultra 200X: 28.5 oz (S), 29.8 oz (M), 30.6 oz (L)
UltraGrid: 28.9 oz (S), 30.3 oz (M), 31.2 oz (L)
Complete Pack (g)
Ultra 200X: 810g (S), 845g (M), 870g (L)
UltraGrid: 820g (S), 860g (M), 885g (L)
Removable items
Frame (3oz / 90 g) and backpad (0.5oz / 15 g) are included but removable.
Main Fabric
Ultra 200X or UltraGrid
Front Pocket Mesh
Heavy duty polyester knit mesh
Torso Length:
Small: 15 - 18 " (38 - 46 cm)
Medium: 17 - 20 " (43 - 51 cm)
Large: 19 - 22 " (48 - 56 cm)
Hipbelt (Min - Max Circumference):
Small: 27 - 41" (69 - 104 cm)
Medium: 28 - 43" (71 - 109 cm)
Large: 29 - 45" (74 - 114 cm)
Hipbelt (Recommended Hip Size):
Small: 28 - 38" (71 - 97 cm)
Medium: 29 - 39" (74 - 99 cm)
Large: 30" - 40" (76 - 102 cm)
Circumference (Top / Bottom)
42" (107 cm) / 33" (84 cm)
Unrolled Height (S / M / L)
31.5" / 33.5" / 35.5" (80 / 85 / 90 cm)
Internal Volume (S / M / L)
43L / 46L / 49L
External Volume (S / M / L)
15L
Total Volume (S / M/ L)
58L / 61L / 64L