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Icebreaker Mountaineer Mid Calf Sock - Men's


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  • Natural/Monsoon Heather - Unavailable

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Made of merino wool, the Icebreaker Men's Mountaineer Sock provides midweight thermal regulation, natural odor-resistance, and heavyweight cushioning for hikers and alpinists.

  • Merino wool blend
  • Naturally antimicrobial
  • High-loft cushioning
  • Achilles instep support
  • Flatlock toe seam
  • Item #ICE005P

Responsible Collection
Responsibly Sourced
79% merino wool, 20% nylon, 1% Lycra
Recommended Use
hiking, alpine & expedition
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 5

Tank socks

Merino wool is the best material for socks because the moisture wicking and antibacterial properties mean you can wear these for days without stink. As a bonus, these are the softest and most comfortable socks ever. These are some of the heaviest cushioning socks I've seen. I may not use them for hiking unless it's extremely cold, but they are really comfortable to wear around.

>Rating: 5

Heavy hitters

I've used it several times
True to size

Warm and cozy as they get, well cushioned and well constructed. Keep in mind these are very thick and if your boots fit well these may make them too tight. Bought them for hiking but ended up using them for my waders while fly fishing. Thanks icebreaker!

>Rating: 3

Good all-around winter sock

I've used it once or twice and have initial impressions
True to size

I use these socks for general winter applications, like inside snow boots, walking around town and for backcountry skiing. They work very well in that regard and are warm & comfy. My only complaint is that they seem to "pack out" after one usage and lose a lot of their fit and loft. This comes back after a washing, but would be a concern for extended winter trips.