Free 2-Day Shipping Over $50 Order by 12/20*

Detail Images

  • Icebreaker - Mountaineer Mid Calf Sock - Natural Monsoon Heather

Current Color

  • Icebreaker - Mountaineer Mid Calf Sock - Natural Monsoon Heather

Icebreaker Mountaineer Mid Calf Sock


Free 2-Day Shipping on Orders Over $50 Order by 12/20*

Select a Size:

Select options
  • Select options
    • S
    • M
    • L
    • XL

    Select a Color:

    Select options
  • Select options
    • Natural Monsoon Heather

    2 Reviews


    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

    Tech Specs

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

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Heavy hitters

    • Familiarity: I've used it several times
    • Fit: 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!

    Good all-around winter sock

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: 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.