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Heavy Expedition - Boot


Heavy Expedition - Boot

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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 98 Reviews
    Write a Review Ask a Question
    • Reviews
    • Questions

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    Your input is very much appreciated. Share it with your friends so they can enjoy it too!

    Filter Reviews:
    Brian T.
    United States United States
    Loved it, perfectly warm

    High-quality and very warm. Comfortable and it seems like it will last a long time, just be sure to air dry them if possible.

    Molly O.
    United States United States
    Best winter sock ever!!

    Finally, after looking for the perfect heavy wool sock this is it!! Three years ago I got my first pair and they are still in excellent condition. I love them for both a super warm and breathable winter outdoor adventure sock and my favorite thing to put on my cold toes at home too. Very cushioned and thick but not stiff. The high merino content is awesome. I gave some to my dad who works as a sawyer and snow removal outside all winter in Northern MN and he loves them in his work boots too. I got us each a few more pair last year and this year my whole extended family is getting a pair for Christmas! I hope they are around forever because I will keep buying them!

    Jeff G.
    United States United States
    November Colorado

    Just wore these in Western Colorado for a 3rd season Elk hunt. Foot of snow, a lot of sitting a lot of moving. Did well in both. Feet aren't cold, even after sweating then sitting. Wool is an amazing thing.

    Kathryn G.
    United States United States
    Great Socks

    I recommend these socks to any co-worker I know!

    Wesley V.
    United States United States
    Simply superb!

    For about 6yrs and 8 pairs now I have worn these socks daily 9mo out of the year. From -25° to 60°. Best ****** socks ever. Have tried all the competition and nothing has the combination of warmth, fit and durability. Highly recommended.

    Almyra H.
    United States United States
    Heavy expedition socks

    I ordered a size larger of my favorite dock, the heavy expedition sock and it fits perfectly. These are my very favorite socks of all time!! I love the extra cushioning!!

    Darlene W.
    United States United States

    I love these socks, they are warm and fit great!

    Pete C.
    United States United States
    Most comfortable boot socks ever!

    I put on my boot socks yesterday for the first time and loved how they felt in my boots and outside of them. In fact, I wore them in the house sans boots all afternoon. They kept my feet warm and comfortable the entire day!



    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.