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trollveggen flex1 Zip-off Pants


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Free shipping above 1 750 SEK.  Free returns.  5 years warranty. 

Our most versatile soft shell pants with zip-off functionality.

These hiking pants are made for demanding alpine climbing but work perfectly for all-season mountaineering adventures, both with or without skis and crampons.





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Product reviews

Rated
4.8
10 reviews
(8)
(2)
(0)
(0)
(0)
Average fit from users
SmallPerfectLarge
Use by reviewer
  • Outdoor/Hiking(12)
  • Mountaineering(5)
  • Sportswear(3)
  • Hunting(1)
  • Ski/Snowboard(1)
Review Summary
Updated February 23, 2026

The Norrøna Trollveggen Flex1 Zip-off Pants are a highly versatile softshell garment designed for dynamic outdoor activities. Their standout feature is the zip-off leg design, allowing for quick conversion from full-length pants to shorts, making them adaptable to changing weather conditions and activity levels. This is particularly highlighted by users who appreciate the ability to shed the lower legs during strenuous approaches or warmer conditions and reattach them for colder environments.

Main Activity: The most frequently mentioned activity across reviews is hiking, often in mountainous or varied terrain. Users consistently praise their performance for multi-day treks, autumn hikes, and general hiking in diverse environments like Norway, Namibia, and Scotland.

Other Use-Cases: Beyond hiking, these pants excel in mountaineering and mixed climbing, where their windproof and water-resistant properties, combined with excellent mobility, are highly valued. They are also suitable for touring and even light rock climbing, demonstrating impressive durability against abrasive surfaces. Some users even find them comfortable for casual wear or hunting.

Fit and Comfort: The pants are consistently described as comfortable and offering a great fit due to their stretch fabric. They are noted for drying quickly and eliminating the need for a belt. While generally well-fitting, one user at 1.92 cm found the size L to be "a bit short," though still functional with high hiking boots.

Criticisms and Areas for Improvement: Zip-off mechanism: A common criticism is the need to remove mountain boots to take off the leg sections. A longitudinal zipper that allows the legs to open completely would be a significant improvement for convenience. Water Resistance: While excellent for a softshell, they will eventually wet out after about 30 minutes of sustained rain or melt, meaning they are not a substitute for hardshells in heavy, prolonged precipitation or for activities like ice climbing where complete waterproofing is critical. Wind Noise: One user noted the zipper can be "biz windy" when flying, suggesting some potential for noise in high winds, though this is a minor point.

Recommendation:

The Norrøna Trollveggen Flex1 Zip-off Pants are highly recommended for avid hikers, mountaineers, and mixed climbers seeking a versatile, comfortable, and durable softshell pant that can adapt to a wide range of temperatures and conditions. They are ideal for those who prioritize freedom of movement, wind protection, and moderate water resistance, and who appreciate the convenience of converting to shorts on the go. This product is perfect for individuals who engage in multi-day trips or activities where weather can fluctuate, and who value a single garment that can perform across various stages of their adventure.

8 MONTHS AGO
They are great!  
5
gordo2007USAF AcademyOutdoor experience: Advanced
Bought theme two months ago and I have taken them on multiple winter hikes and they are phenomenal!
Activities: Casual, Mountaineering, Hiking, Trekking
Yes, I recommend this product
10 MONTHS AGO
One of the best trousers on the market for 3 saison use  
5
Jor295KielOutdoor experience: Intermediate
When I first saw this pants I thought it’s a bit useless but my friend bought them. While I was swatting in my long mountaineering pants (with open vents) on the approach from the valley to the glacier, he zipped the legs off. On the ice he put the legs back on and still had a fully functional mountain pant.
Activities: Casual, General outdoor, Hiking, Trekking, Mountaineering
Yes, I recommend this product
11 MONTHS AGO
A game-changer for softshells!  
5
ChadwickistanPikes PeakOutdoor experience: Expert
A game-changer for softshells. These are windproof, water-resistant, and have a great fit. They’ve become my go-to for mixed climbing, mountaineering, and touring. I used to rely exclusively on hardshells for winter protection, but the Trollveggen Flex1 changed my mind. Field Test: I wore these on the DeCaLiBron loop (Mount Democrat, Cameron, Lincoln, Bross) in 5–20°F temps with 40mph sustained winds (70mph gusts). Paired with just a thin wool base layer, my legs never got cold. The windproofing is excellent in conditions where I’d normally need a full hardshell. I also took these up Rainier in July and they performed flawlessly. Durability: I’ve put them through a dozen days of rock climbing (approx. 4,000' vert), including brutal offwidths that tried to chew through the fabric—they held up exceedingly well. Caveat: I’ll still use hardshells for ice climbing. The Trollveggen Flex1 eventually wet out after about 30 minutes of sustained rain or melt, which is very reasonable for a softshell.
Activities: Ski touring, Mountaineering, Hiking
Yes, I recommend this product
LAST YEAR
Comfortable, versatile and good looking hikingpants  
4
TijnTOutdoor experience: Intermediate
Only pants i took on a 6-day autumn hiking trip in the north of albania. Warm enough, zip-of during the day. Very comfortable. Size L is a bit short (1,92 cm) but works with high hiking boots.
Activities: Hiking, Trekking
Yes, I recommend this product
LAST YEAR
Excellent water repellent and comfortable fabric.  
4
Doc SMSOslo, NorwayOutdoor experience: Intermediate
Perfect hiking pants for unstable weather; changeable to shorts makes them versatile. Only downside is that you have to take your mountain boots off to remove the legs…recommend longitudinal zipper to open up completely
Yes, I recommend this product