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Female Look front image of trollveggen heavy merinoUll Socks Indigo Night/Dark Denim
Female Look front image of trollveggen heavy merinoUll Socks Indigo Night/Dark Denim
Female Look side image of trollveggen heavy merinoUll Socks Indigo Night/Dark Denim
Female Look back image of trollveggen heavy merinoUll Socks Indigo Night/Dark Denim
Female Look back image of trollveggen heavy merinoUll Socks Indigo Night/Dark Denim
Packshot front image of trollveggen heavy merinoUll Socks Indigo Night/Dark Denim
Unisex

trollveggen heavy merinoUll Socks

DKK 329

Color Indigo Night/Dark Denim


Size (Regular Fit)



Free shipping above 1 350 DKK.  Free returns.  5 years warranty. 

Our warmest outdoor/hiking socks.

These durable socks are made for demanding alpine climbing but work perfectly for all-season mountaineering adventures and general outdoor activities.






Exterior shot of the ComfySocks building, featuring a wooden facade, windows, and clear blue sky.

Made at Comfysock, Portugal

Working together since
2017
Employees
123
74 women/49 men
Zero co2 plan
Yes
Energy source
20%
Solar panel and green energy
Code of Conduct
Yes
Recycling
Yes
RSL
Yes
Organized in union
No
Social Audit
Yes
2025, announced
HIGG FEM
No
HIGG FSLM
No
Read more
View all factories

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Product reviews

Rated
4.8
96 reviews
(74)
(21)
(1)
(0)
(0)
Average fit from users
SmallPerfectLarge
Use by reviewer
  • Outdoor/Hiking(122)
  • Sportswear(40)
  • Ski/Snowboard(38)
  • Mountaineering(31)
  • Mountain biking(17)
  • Hunting(5)
  • activities.trail_running(1)
Review Summary
Updated October 23, 2026

The trollveggen heavy merinoUll Socks are a highly-regarded heavy-duty merino wool sock, praised for their exceptional warmth, comfort, and quality.

Standout Features: These socks are designed to be super warm and highly breathable, effectively keeping feet dry and comfortable even in challenging conditions. They are made from high-quality merino wool, which is known for its odor-resistant properties, allowing for multi-day use without developing unpleasant smells. Many users highlight their excellent fit, often describing them as "snug," "perfect," and providing a "hug" for the feet, with some appreciating the specific Left/Right indicators. They offer good cushioning and are described as "fluffy" and "soft," contributing to overall comfort.

Common Use-Cases: The most frequently mentioned activity for these socks is hiking, with numerous reviewers specifically recommending them for this purpose. They are also highly favored for a wide range of cold weather outdoor activities, including skiing (alpine, skitouring, cross-country), snowboarding, ice climbing, mountain biking (late fall/winter), trekking, and general winter use in cold environments. Some users even wear them for everyday warmth during snowy days or for work in cold, wet, and windy conditions.

Fit and Comfort Level: The fit is consistently described as excellent and comfortable, with many finding the sizing chart accurate. They "hug the feet" and provide a "snug" feel without bunching or sagging. The heavy weight of the merino wool offers significant padding and warmth. While generally comfortable, a few reviewers noted that they might be too warm for temperatures above 0-5°C or for summer use in milder climates. Some found the toe area to have a "loose fit," which was a positive for their feet in hiking shoes, while others found them a "bit wide" due to being unisex.

Criticisms and Areas for Improvement: The most common criticism is pilling, with several users reporting that the socks started to get fuzzy or "flaking" after relatively short periods of use (e.g., "a few years old," "quickly," "140 hours"). This is a concern for a product in this price range, with some suggesting Norrøna shouldn't "cut corners on quality." Other minor suggestions include making them slightly longer to prevent them from folding down in ski boots, adding more padding in the upper area and heel for longer days with heavy loads, and offering more color options. One reviewer also noted that the cuff could be a "bit loose" for very skinny ankles. The price is also mentioned as being "expensive" by one reviewer.

Recommendation: The trollveggen heavy merinoUll Socks are highly recommended for individuals seeking exceptionally warm, comfortable, and odor-resistant socks for cold-weather outdoor activities, with hiking being their primary strength. They are ideal for those who prioritize warmth, breathability, and a snug fit in challenging conditions. While the pilling issue is a recurring concern, the overwhelming positive feedback on their performance, comfort, and warmth makes them a strong contender for anyone needing reliable heavy-duty merino socks for winter adventures and demanding outdoor pursuits.

5 DAYS AGO
Better than the last one, good socks  
4
Jor295KielOutdoor experience: Intermediate
I have two pairs, one is a few years old and started pilling quite quickly. This one seems way better. Those heavy weight socks are very comfortable
Activities: Casual, General outdoor, Mountaineering, Trekking, Hiking
Yes, I recommend this product
8 DAYS AGO
nice socks  
4
jmpxupiCataloniaOutdoor experience: Advanced
nice merino socks. warm enough. good quality. size is ok
Activities: Trekking, General outdoor, Hiking, Casual
Yes, I recommend this product
29 DAYS AGO
Great for cold days  
5
SantifbAndorraOutdoor experience:
I bought it for do activity during cold days. It’s super warm but breathable
Activities: Trekking, Mountaineering, Hiking
Yes, I recommend this product
8 MONTHS AGO
Fantastic socks!  
5
ChrisMUC74Munich, GermanyOutdoor experience: Intermediate
Great quality and comfortable fit, these are also incredibly warm. Bought 2 pairs and I'll probably grab more!
Activities: Mountaineering, Trekking, Hiking, General outdoor
Yes, I recommend this product
9 MONTHS AGO
Great socks  
5
StøretizOutdoor experience: Novice
Just putting them in and you can feel it's high quality socks. They hug the feet and are very warm, expansive but love them.
Activities: General outdoor, Hiking, Trekking
Yes, I recommend this product