Durston Kakwa 55 UltraGrid (2026)
Weight: 870 g (Medium), from 830 g.
The Durston Kakwa 55 UltraGrid combines a supple nylon fabric with an aluminium frame, supportive hipbelt and accessible pockets for multi-day hikes and long-distance trails. Choose torso length and hipbelt size separately.
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- ClosureRoll-top
- Frame systemRemovable frame
- Hipbelt / waist size (cm)S/M: 76–96; M/L: 86–106
- MaterialUltraGrid
- Minimum weight (g)830
- Recommended maximum load (kg)20
- Size / fitS / M / L. Complete weight: S 830 g, M 870 g, L 890 g. Select hipbelt separately: S/M or M/L.
- Torso length (cm)S: 38–46; M: 43–51; L: 48–56
- Typical packed weight (g)870
Description
Article no.: 3121
Durston Kakwa 55 UltraGrid
TheKakwa 55 is Durston’s premium backpack for multi-day hikes—designed to combine ultra-lightweight construction with true carrying comfort.
For 2026, the Kakwa has been updated with a redesigned hip belt offering improved comfort and durability, a new lumbar support, and increased internal volume. At the same time, the backpack maintains its low weight of under 900 grams thanks to a further optimized design.
Weight: 870 g (Medium), from 830 g.
The Durston Kakwa 55 UltraGrid combines a supple nylon fabric with an aluminium frame, supportive hipbelt and accessible pockets for multi-day hikes and long-distance trails. Choose torso length and hipbelt size separately.
Comfort and Load-Carrying Capacity
Many ultralight backpacks save weight by simplifying the carrying system. This can mean a lack of load-bearing straps, less effective frames, or simpler hip belts, which often limits comfort when carrying heavier loads.
The Kakwa 55 is designed to provide high carrying comfort even with heavier loads.
The inverted U-shaped frame uses hollow aluminum tubes that provide both vertical and horizontal stability while keeping the weight low. The frame is directly connected to the hip belt for efficient weight transfer and works in conjunction with the load straps to relieve pressure on the shoulders.
The shoulder straps feature an ergonomic S-shape that follows the body’s natural contours, while the hip belt wraps around the hips using a double-strap design and an effective 2:1 tensioning system.
The result is a backpack that comfortably handles loads of up to 20 kg.
Thoughtful Storage
The Kakwa 55 is designed to provide quick access to the gear you use most throughout the day.
Hip belt pockets
Two large hip belt pockets with an improved design that can be easily opened and closed with one hand. Perfect for snacks, your phone, a headlamp, or a sunshade.
Shoulder strap pockets
Pockets on both shoulder straps that are ideal for your phone, sunglasses, small water bottles, or other gear you want close at hand.
QuickPocket
Durston’s unique QuickPocket is integrated into the left side pocket and provides quick access to larger items like a hat, gloves, or a map without having to take off your backpack.
Mesh front pocket
A large, durable outer pocket that can hold items such as rain gear, a tent, or other gear you want to access quickly while hiking.
Durability
The Kakwa 55 is built for long hikes and rugged use.
UltraGrid
A more affordable option featuring a nylon-based ripstop construction reinforced with UHMWPE fibers and a waterproof PU coating.
To ensure a long service life, reinforced seams, heavy-duty thread, and a durable knitted mesh material in the front pocket are used.
Reviews
BackpackingLight – “Most Comfortable”
“The Kakwa is one of the most versatile and comfortable backpacks I’ve ever used for loads over 16 kg.”
Section Hiker – “10 Best Ultralight Backpacks”
“The low weight is impressive for a frame backpack, and it provides excellent weight transfer to the hips.”
The Trek – “I Could Not Be Happier”
“I’ve become a big fan. It carries everything very comfortably and has smart solutions for gear.”
Adventure Alan – “Incredibly Well Designed”
“A strong contender for the best ultralight backpack on the market.”
Weight
| Model | Small | Medium | Large |
|---|---|---|---|
| UltraGrid | 830 g | 870 g | 890 g |
Removable parts: Frame (90 g) and back plate (15 g) are included but can be removed.
Size Guide
Back Length
| Backpack size | Back Length |
|---|---|
| Small | 38–46 cm |
| Medium | 43–51 cm |
| Large | 48–56 cm |
Hip belt
The Kakwa 55 is available in two hip belt sizes that can be combined with any back length.
| Our size | Durston’s size | Adjustment range | Recommended hip circumference |
|---|---|---|---|
| Medium | S/M | 71–115 cm | 76–96 cm |
| Large | M/L | 81–125 cm | 86–106 cm |
Note: Back length and waist belt size are selected separately. Choose the back length based on your torso length and the waist belt based on your waist circumference.
Volume
Backpackinglight Volume Test
In our own volume test, a Kakwa 55 in Medium held 56.5 litres of balls with two turns of the roll-top. The original test record does not specify the material version.
With three turns of the roll-top, we estimate the practical capacity at approximately 54–55 litres.
Features
- UltraGrid material
- Inverted U-shaped aluminum frame
- Load straps / load lifters
- Ergonomic S-shaped shoulder straps
- Dual-strap system on the hip belt
- 2:1 tensioning system with reverse pull
- Y-shaped top buckle
- Eight external attachment points
- Two hip belt pockets
- Pockets on both shoulder straps
- QuickPocket on the left side
- Compatible with hydration systems
- Durable mesh front pocket
- Reinforced seams and premium construction
Summary
The Durston Kakwa 55 is one of the most thoughtfully designed ultralight backpacks on the market. The combination of low weight, high comfort, smart pocket design, and highly durable materials makes it an excellent choice for everything from weekend trips to long thru-hikes.