I’m used to hardshells that feel heavy and robust. So when I first held the Fjällräven Keb Lätt GTX and read 176 grams on the label, my first thought was: can this really work? With its thin outer fabric, it looks more like a windbreaker than a serious rain jacket for the mountains. That’s exactly what made me curious. So I took it to the Zugspitze range in Bavaria for a two-day trip full of rain, wind, sunshine and plenty of rock contact.
The short answer: yes, a hardshell can weigh 176 grams and still offer full protection. The Fjällräven Keb Lätt GTX kept me completely dry during heavy downpours, blocked the wind well and came through several Via Ferrata routes without visible damage. A 3-layer GORE-TEX Performance construction with a 28,000 mm hydrostatic head delivers on its promise. The downsides are a roomy fit, a slightly stiffer feel than heavier shells and just one chest pocket. At a recommended retail price of €550 it isn’t cheap, but for fast & light, Via Ferrata, trekking and bikepacking it’s one of the most interesting lightweight hardshells I’ve worn. Final score: 8.8/10.
At a glance: Fjällräven Keb Lätt GTX
- Product: Fjällräven Keb Lätt GTX (3-layer GORE-TEX Performance hardshell)
- Final score: 8.8/10
- Best for: fast & light mountain trips, Via Ferrata, multi-day trekking and bikepacking
- ➕ Biggest plus: full 3-layer rain protection at just 176 grams
- ➖ Biggest minus: loosens up in strong wind and has a roomy fit
- Price: €550 (RRP)
Fjällräven Keb Lätt GTX specifications
- GORE-TEX Performance, 3-layer construction
- Hydrostatic head: 28,000 mm
- Weight: 176 grams
- 1 zippered chest pocket
- Adjustable hood, helmet compatible
- Adjustable cuffs
- Adjustable hem
- RRP: €550
How was the Keb Lätt GTX tested in the Zugspitze mountains?
On our two-day trip around the Zugspitze, we hiked five to six hours a day. The route combined several Via Ferrata sections with long hiking stretches. The weather changed constantly: rain showers alternated with sunny spells, and some sections were very windy.
Those are exactly the conditions in which I like to test a hardshell. Not just during one heavy shower, but when you wear the jacket for hours on end while the weather keeps shifting.
How waterproof is the Keb Lätt GTX in heavy rain?
During the heavy downpours, I stayed completely dry. That was probably the moment my doubts disappeared. Because the jacket feels so light and thin, I expected to notice a compromise somewhere. It never came. The longer the rain lasted, the more I felt I was wearing a fully fledged hardshell.
How does the Keb Lätt GTX perform in strong wind?
Against the wind, the Keb Lätt GTX from Fjällräven does what you’d expect. It is noticeable, though, that the jacket can loosen up in stronger gusts. The outer fabric sometimes takes on odd shapes and the jacket feels a bit baggy. While hiking, that’s not a big issue, but next to a heavier, stiffer hardshell you do notice the difference.
Can the thin outer fabric of the Keb Lätt GTX handle rock contact?
The Keb Lätt GTX is a 3-layer hardshell with GORE-TEX Performance and a 28,000 mm hydrostatic head. Its most striking feature remains the weight of 176 grams. It’s precisely that combination of a 3-layer construction and such a low weight that makes this jacket so interesting.
The outer fabric is thin and light, and you can see it. That’s why I was curious how it would hold up on the Via Ferrata, where scraping against rock is almost unavoidable. It turned out fine. The jacket made contact with the rock several times, but afterwards I found no damage or obvious wear. That surprised me perhaps even more than its rain protection. Despite the thin fabric, the jacket never felt fragile during this trip.
How comfortable is the Keb Lätt GTX on long hikes and Via Ferrata?
The first thing you notice when you put it on is the weight. Or rather, the lack of it. While hiking, it almost feels as if you’re not wearing a hardshell at all. I especially appreciated that on the long stretches. When you wear it for hours, you realise how little you notice it.
On the Via Ferrata, the same held true. Freedom of movement is very good, and at no point did I feel restricted while climbing. I also found the jacket surprisingly warm. The Keb Lätt GTX isn’t an insulated jacket but an outer layer, yet it blocks wind and rain so well that it felt comfortable throughout the trip. It is slightly less supple than some heavier hardshells. Given the weight, that wasn’t a problem for me at all.
How does the Fjällräven Keb Lätt GTX fit?
I’m 186 centimetres tall and weigh 78 kilos. The jacket fits me on the roomy side, something I often notice with Fjällräven. For a hardshell, I actually like that. There’s enough space for a fleece or insulated jacket underneath without everything feeling tight. During our trip, it didn’t cause me any issues.
What features does the Keb Lätt GTX have?
The Keb Lätt GTX has a single zippered chest pocket. It’s easy to reach, and for my trip it was enough. The zip feels light too, which suits the character of the jacket.
I really liked the hood. There’s enough room for a helmet, and you can easily cinch it at the back. That keeps it in place while hiking and on the Via Ferrata. The cuffs are adjustable as well, and drawcords in the hem let you tighten the jacket easily. Not spectacular features, but on a trip with changeable weather, these are exactly the details you come to appreciate.
Why is 176 grams the biggest advantage of the Keb Lätt GTX?
You bring a hardshell because the weather might turn, but most of the time it simply sits in your pack. During our two-day trip, I barely noticed I was carrying the Keb Lätt GTX. It takes up little space and weighs next to nothing.
Because of that, I now pack it more readily for trips where I’d normally wonder whether I need a hardshell at all. You stuff it in your pack and carry full protection without sacrificing much weight or space.
Who is the Fjällräven Keb Lätt GTX for?
For me, the Keb Lätt GTX is particularly interesting for longer treks, fast & light mountain trips, Via Ferrata and bikepacking. Especially on a bike trip, where space and weight in your bags are limited, such a light and compact hardshell is a real asset. If you need a jacket that withstands heavy pack straps and rough daily use, or you want plenty of storage, a heavier hardshell with more pockets is probably a better fit.
Quick answers about the Keb Lätt GTX
- Is the Fjällräven Keb Lätt GTX really waterproof?
Yes. Thanks to the 3-layer GORE-TEX Performance construction and 28,000 mm hydrostatic head, I stayed completely dry during heavy rain in the Zugspitze mountains. - Can you wear a helmet under the hood?
Yes. The hood has enough room for a helmet and can easily be tightened at the back. - Does the Keb Lätt GTX run large?
It fits on the roomy side. At 186 cm and 78 kilos, I had enough space for a fleece or insulated layer underneath.
Verdict: can a hardshell really weigh 176 grams?
After two days in the Zugspitze mountains, the answer is clear to me: yes. My first impression of the Fjällräven Keb Lätt GTX was mainly one of doubt. The jacket is extremely light and, with its thin outer fabric, looks almost like a windbreaker. That image changed quickly on the trail.
In heavy rain I stayed completely dry, it offered enough protection against the wind, and on the Via Ferrata the freedom of movement was very good. Even contact with rock caused no problems during my test.
The jacket fits a little roomy, feels slightly less supple and has just one chest pocket. None of that bothered me on the trip. At an RRP of €550, the Keb Lätt GTX is not a cheap hardshell. But at just 176 grams, it’s a jacket I’m far more likely to bring than a heavier one. For day hikes in the mountains, Via Ferrata, fast & light, trekking and bikepacking, the Keb Lätt GTX offers a very interesting balance of protection and weight.
