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Harness the power of sheep.

Designed to keep your toes happy and comfortable, the Icebreaker Men's Multisport Ultralite Micro Sock features a blend of synthetic and natural fibers so you concentrate on your stride.

  • Merino wool fibers are naturally breathable and odor-resistant
  • Nylon and Lycra blend enhances fit, improves durability, and reduces dry times
  • Unlike traditional, long-cut wool fibers, merino wool's fine-cut fibers are soft to the touch and won't irritate your skin
  • Reinforced heel and toe zones stand up to abuse
  • Instep support helps keep your foot happy
  • LIN toe seam helps prevent blisters
  • Icebreaker makes its products in a way that supports New Zealand farmers, ensures overall welfare of the sheep, and promotes sustainable manufacturing practices

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Here's what others have to say...


Great for Multiple Sports

    This sock is lightweight and awesome for multiple sports! I've worn these biking, climbing, and running and love they performance I've experience with these socks. These socks are easy to slip on/off and have a great comfortable, snug fit. The breathability is great in this lightweight sock!


    Great socks

    • Familiarity:I've put it through the wringer
    • Fit:True to size

    The socks are true to fit. Lite, supportive, and durable. Probably my favorite pair of socks.


    Lightweight, soft, and good wicking, but

    • Familiarity:I've used it several times
    • Fit:Runs large

    I ran a few times in these socks. They are lightweight, soft to the skin (despite being wool), and wick sweat away well. But, I would buy a size down because they run a little large. I experienced some slipping and blisters with them.


    Great for Mountain Biking

    • Familiarity:I've put it through the wringer
    • Fit:True to size

    I use these for mountain biking. I liked the first pair so much, I bought a second pair. I'm not a runner, but love them for biking. The fabric is soft, easy to slip on and off, but stays in place. I also bought a pair of icebreaker's casual/lifestyle socks, and I find these to be much more comfortable.

    I wear a womens 9.5 shoe and bought the size L sock. Fits perfect.


    Not for running Not for running

    • Familiarity:I've put it through the wringer
    • Fit:True to size

    I must say that I expect something advertised as multisport to be apt for running. Not the case for me. I could tolerate these for a mere 3+ miles before getting ridiculous blistering on the soles of my feet and some of my toes. They work for just walking around and basic calisthenic type exercise. I would not go for these if you are looking for good running socks. Perhaps I will try their socks that were actually designed for running. I have been very happy with the Smartwool running socks.


    They're okay.

    • Familiarity:I've put it through the wringer
    • Fit:True to size

    My husband uses these for all kinds of stuff and the main gripe is that they are too slippery and very thin. If thats what you like in a sock then by all means buy these. On the plus side they are very breathable.


    Not much better than synthetics

      The socks are comfortable when worn all day. Not quite as odor resistant as I had hoped. I've worn them with various shoes and each time came away socks that didn't smell much better than my synthetics.

      These are some of the lightest weight merino socks that Icebreaker makes. To get a super thin sock you have to decrease the amount of merino that goes into the sock and increase the amount of synthetics. Hence these will retain order more than other merino socks with higher merino contents.


      Good Socks

      • Gender:Male
      • Familiarity:I've used it several times

      I'm using these for tennis. They are comfortable and durable, and they breathe well. Probably because of the synthetics in the blend, they slide more easily in my shoe than the alpaca socks I used to wear but can't find now. So for tennis there is a bit of a stability problem, but they're still much, much better than cotton or all synthetic.