Fjӓllrӓven Keb Trousers Curved review: expertly designed technical trekking trousers

These tough technical trekking trousers yield to your movement but hold up against challenging mountain conditions and are built to last

A women descends a rocky slope in Fjallraven Keb trousers
(Image: © Fjallraven)

Advnture Verdict

These tough technical trekking trousers come at a premium price because they’re built to last and expertly designed to move and breathe with you on the mountain, even in challenging conditions.


  • +

    Tough and durable

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    Stretch panels for good movement and comfort

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    Water and wind resistant

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    Generous ventilation zips and openings for knee pads

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    Eco friendly


  • -

    Not insulated

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    Not waterproof

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Fjӓllrӓven Keb Trousers Curved: first impressions 

These tough Fjallraven Keb trekking pants are built to last and expertly designed to hold up under challenging mountain conditions. These medium weight pants are tailored to a flattering fit, with stretchy fabric panels providing excellent range of motion. With water and wind resistance, you can wear these in most conditions and seasons, however they’re ideal for spring, fall and dry winter days.

They boast generous ventilation zippers from hip to knee and down the calves, ample deep pockets with flaps for gear, phones, wallets and keys and openings for knee pads if you plan on scrambling and bouldering in them. They feature belt loops and attachments for suspenders with reinforced knees, rear and pockets for scrambles, seats and stumbles on the trail.

These pants are not insulated, but they do repel non-extreme weather and they’re just roomy enough to be worn with long underwear underneath on colder days. These are well-fitting and ultra durable trousers that run at the high end of the price range, but the good news is they should last you a lifetime.


• RRP: $225 / £200
• Sizes available: EU 32 - 46, UK 4 - 20, US 24" - 37"
• Materials: Polyester (65%), cotton (35%), polyamide (63%), polyester (26%), elastane (11%)
• Weight: 540g / 19 oz
• Colors: Stone grey, Uncle blue, Laurel green, Black, Mineral blue, Acorn, Purple, Plum Chestnut
• Best use: Hiking, trekking, climbing, scrambling, camping

Fjӓllrӓven Keb Trousers Curved: on the trails 

These tough trekking trousers do not mess around. They provide all the wind and water protection you want plus all the bells and whistles you like and are easily the most flattering pair of hiking trousers I’ve ever worn.

Though they look like a more classic cargo-style pant on the hanger, the high waist and stretchy fabric panels mean they're some of the best hiking pants for flattering your shape, and they strike the perfect balance between skin tight and flapping in the breeze. 

I put these to the test on a slightly blustery early fall hike and a weekend of fall camping and found they gave me all the wind and water protection and breathability I needed. The ventilation zips were great for cooling off on the uphill. I put the reinforced rear to the test with a seat at the top and was nicely dry afterwards. Though they're not fully waterproof, I comfortably sat in damp grass with them as we gathered around the bonfire and wasn't damp afterwards. For a bigger soak, you'll get wet but they do dry quickly. Overall these provide superior movement for technical hikes and good protection from the elements without being bulky or heavy.

They’ve got four good deep pockets for gear you want handy and the two on the thighs were big enough for my beanie and gloves, which kept coming off and going back on, while one has a craftily hidden credit card pocket. I didn’t use all the extras such as belt loops, suspender attachments and adjustable ankle straps but it’s good to know they’re there.

It goes without saying that these are on the expensive end of hiking pants, but I think the quality matches the price tag. With a tough design and reinforcements where you need them most, these should stand up to the test of time no problem.

They’re not fully waterproof or insulated, so you might not wear these in extreme cold conditions, deep snow or on extra wet days, and they might be a little warm in summer depending on where you hike, but they’ll keep you comfortable and protected in spring, fall and dry winter days. If you get them muddy, as I have, just let it dry and you can easily brush it off and keep them clean without washing them. Fjӓllrӓven know they have a quality pair of trousers here and they’ve priced them accordingly.

Here’s how they performed:


True to size. They got the sizing just right on these. I usually wear a small/UK8 on the bottom and the size 36 fit like a glove. Regular length means the legs come to the top of my feet without loads of extra fabric bunching around my ankles. On a cold day, you could wear a pair of long underwear underneath.


These are curved which means they’re ultra flattering, slim without being tight and a high waist. 


Stretch panels mean these pants move when you do and they’re comfortable to move in and sit down in. I didn’t experience any chafing or rubbing anywhere. They’re comfier than most technical trousers I’ve worn. 

Temperature regulation 

The ventilation zips are really the key to these trousers’ temperature regulation, and they work as nature intended, keeping me cool on the uphill. The windproof fabric and reinforcements kept me warm at the summit. 


The claim of breathable fabric held up for me on the trail, but this is obviously aided by the ventilation zips which I used on the uphill. 


These are truly built to last and I think that’s why they’re priced as though they’re only likely to sell one pair per customer. Even if you put these to the test against slate and choss, you should be able to wear them again and again. 

Here’s where we tested the Fjӓllrӓven Keb Trousers Curved: 

This short but steep climb takes you up above Loch Katrine and Loch Achray for one of the most stunning views in the Trossachs.

Julia Clarke

Julia Clarke is a staff writer for and the author of the book Restorative Yoga for Beginners. She loves to explore mountains on foot, bike, skis and belay and then recover on the the yoga mat. Julia graduated with a degree in journalism in 2004 and spent eight years working as a radio presenter in Kansas City, Vermont, Boston and New York City before discovering the joys of the Rocky Mountains. She then detoured west to Colorado and enjoyed 11 years teaching yoga in Vail before returning to her hometown of Glasgow, Scotland in 2020 to focus on family and writing.