Heavy Expedition - Boot

115 reviews

Heavy Expedition - Boot

115 reviews

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  • The ultimate combination: Merino wool for cold weather insulation and the performance that comes from a perfect fit. There is no other heavyweight sock that can make this claim. If there were, we would have made it! This sock is loaded with 100% Merino wool on the inside against your foot, so all you feel is comfortable and dry.

    • Heavyweight full-foot cushioning for warmth and protection.
    • Durable nylon exterior for extended wear.
    • Mid-calf height works well with hunting boots.
      Merino Wool 82%
      Nylon 13%
      Polyester 3%
      Lycra® Spandex 2%

    Customer Reviews

    Based on 5 reviews Write a review

    Designed to be the best socks you've ever worn.


    Moisture Wicking

    Designed for stay-dry breathability & performance


    Full Contact Fit

    No uncomfortable bunching, slipping, or rubbing


    Smart Cushioning

    Extra padding in active zones: toe, arch, & heel


    2-Year Warranty

    Quality-made in the USA & guaranteed to last

    Merino Wool

    All our socks are made with 18.5m superfine weave, suit-grade performance Merino wool.

    Odor Resistant



    Omega Performance Yarn

    Our custom blend of man-made fibers selected for the best breathability and fit.



    Moisture Wicking

    Customer Reviews
    5.0 Based on 115 Reviews
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    C. Albers
    United States
    Very comfortable

    Bought these looking for some cushioning for the bottom of my feet. Does a good job. Very soft as well.

    Jim H.
    United States United States
    the real deal

    I bought 2 pairs of these for my wife, she has always had ice cube feet but not any more. Finally a truly thick merino wool sock that lives up to the name.(expedition weight). Thank you FITS, oh yea & made in the good ol' U.S OF A.

    James M.
    United States United States
    Oh my god!!!! Amazing

    All I can say is finally I have found the best socks in America. They look and feel great . They’re thick but not so much that I can’t wear a normal shoe. I love the length and the colors and they’re comfortable as ****. I just got back from hiking in Scotland and they did me perfectly. I love them!

    Frank R.
    United States United States
    Best socks made

    These are the best longest lasting most comfortable Sox made. It’s all I buy these days. Thanks for a great dock and my feet thank you!

    United States United States

    Theses are seriously the best socks I've ever bought from any company. There made to last a very long time...keep up the great work

    Jan B.
    United States United States
    High Quality

    This was a gift at Christmas 2020. My Son really like how warm they are keeping his feet.

    David C.
    United States United States
    Boot heavy

    Great sock

    United States United States
    Runs small

    Excellent sock but they run small. Chart indicates that size large fits up to shoe size 10. I wear a size ten shoe and these socks are too small. You will need an Xl. Otherwise the warmth and comfort is fantastic. If you buy these socks you won’t be disappointed.



    The Perfect Fit Starts With the Right Size.

    Your sock size shouldn’t be a guessing game. Our socks range from small to double XL, but the best way to know the perfect fit for you is to match your shoe size to the chart on the left. That way, you’ll know the size you select will give you the fit and feel you expect.

    Between sizes? Go with your gut, but rest assured that your socks will still fit great. If you receive your order and find yourself wishing you’d gone up or down a size, just let us know. We’ll happily send you replacements for your preferred size.

    Concerned about laundry mix-ups? All FITS® socks are coordinated by color and size, based on the colors you see on the size chart. So, you won’t have to worry about mixing up your sizes with the other FITS® wearers in your home. (But stray socks mysteriously going missing in the dryer? Unfortunately, we can’t help with that.)

    Questions? Let’s talk.