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Merino Wool U-Warm Mid, Hiking Socks, 2-Pack

Sale price: $19.99 Regular price:

These ultra-warm socks offer maximum comfort and warmth with the inside of the foot knitted in Merino wool. For added strength, the outside of the foot is made of acrylic

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Size Guide
Sale price: $19.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8641372

Product Features

A photo of the Merino Wool U-Warm Mid, Hiking Socks, 2-Pack in use

Merino Wool U-Warm Mid, Hiking Socks, 2-Pack | Our designers have developed this sock for your hikes in extremely cold weather. Enjoy the snow with the warmest in the range.

These ultra-warm socks offer maximum comfort and warmth with the inside of the foot knitted in Merino wool. For added strength, the outside of the foot is made of acrylic


100% inside of the foot knitted in Merino wool.

Abrasion resistant

Multistrand polyamide exterior structure provides increased durability.

Odor control

Merino wool naturally reduces the retention of body odors.

User comfort

100% terry fabric on the heel and toe for a more comfortable fit.

Product Customer Reviews

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2468 Reviews
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Merino Wool U-Warm Mid, Hiking Socks, 2-Pack,black
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Very comfortable and warm

Were great for skiing! Didn’t feel the cold at all and they’re very comfortable. Thin enough that you can still wear your ski boots or regular shoes comfortably but thick enough that they keep you warm.

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Warm socks

Very warm socks, very stretchy and durable and very good deal with the price.

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Great socks

Very comfy and nice fit.

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Comfy and warm

Comfy, warm, feet don't sweat, but a bit itchy

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Bought for commute cycling

Decently warm enough socks for active wear in winter weather. I use them on my commute to work on my bike and once I work up a bit of heat, they're warm-ish. The wool seems to be concentrated around the top of the sock and the thick synthetic fabrics hug your foot. A little disappointed by this as longer rides allow a chill to get in. Buy an all-wool sock if you're looking for something warmer.

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Great product

Great products

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You get what you pay for.

2 different sized socks.

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Hello David,

Thank you for leaving a review about this purchase.

We are very sorry to hear that you had two different sizes in this pack of socks.

Please don't hesitate to bring them back so we can exchange them or refund your purchase.

We apologize for the inconvenience and we hope to see you again soon.

Decathlon Calgary Team

Good socks

Have had these in a few colours and sizes now with no complaints from me or my kids. They're not itchy and they're warm.

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Hi David,

That is wonderful news, thank you so much for sharing your experience with us. We hope you have a great day. We are excited to welcome you back in-store soon! 💙

Very warm wool socks

Bought these in a couple of sizes and colours. They're very warm and not itchy. They also seem to be lasting well, they're just tossed in the washer and dryer and haven't shrunk or pulled badly.

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Hi David,

We are so glad to hear you're enjoying the socks. Thank you for your review of them. Have a great day! :)

Love the socks

Warm and fit just right

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Very warm

It's good. I am very satisfied with this. These socks are very thick and warm.

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Hello Jieun,

Thank you for your feedback.

See you soon !

Great wool socks

Comfortable warm merino wool socks. Anatomically designed so need to follow the L&R label stitched in. Review questions make you laugh when the ask about abrasion resistance when you’ve only had them a week.But so far thankfully no holes in them 😉

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Very snug!

Very happy with these for the everyday use on the coldest winter days in Scotland.

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Good value socks

Comfortable and warm socks

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Part wool women's hiking socks.

Feet the feet amazing, I keep buying these and will continue to do so. I've slim ankle but would appreciate a little more room/give on elastic top to compensate for after numerous general 30° washes. Not uncomfortable mind, as I keep purchasing, being particular. Bonus, keeps the dirt and grime out!

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Size Guide

Size Guide Visual

Additional Product Information



  • 3% Spandex
  • 22% Acrylic
  • 29% Wool
  • 46% Polyamide

How to choose the right footwear for hiking

To be well equipped in winter, we recommend you follow these guidelines : Warmth: Warmth provided by a warm pair of socks (ideally containing a suitable percentage of wool) Breathability: Choose the sock according to the intensity of the hike and make sure you wear a breathable model to minimize moisture. Boot height: Adapt the height of the sock to the height of the upper and preferably choose high models if you want more protection.

Pack of 2 pairs

This model is sold in packs of 2 pairs of socks in the same color.

How to select the right size for your hiking socks

Benefiting from the properties of the spandex used in all our socks, they conform to your feet and stay firmly in place when worn. Given that the length, width, and volume of our feet is always different, we advise you to try on your socks in store before purchase and then test them in use before setting off on a long hike.

How does your product warranty work?

This product is guaranteed for 2 years from the date shown on the sales receipt. A product covered by the warranty will be exchanged free of charge. The warranty covers product defects, excluding those resulting from normal wear and tear and improper use.

Determining the environmental impact of our products

The environmental impact of the product is calculated based on its entire lifecycle and using different indicators. A score from A to E is given to help you easily identify the more eco-friendly products by comparing products of a similar type. Decathlon actively promotes this initiative. Check out our efforts in the area of sustainable development:



Product testing

All our products are tested in the field by user representatives and these tests are run in parallel to our laboratory tests. By conducting this comprehensive and stringent dual testing process, the technical features and design of our Quechua products are continually being improved. Your regular feedback is also taken into account to constantly improve our range.

Storage instructions

Dry your products thoroughly before storing them away.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual