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These heavyweight, cushioned REI Merino Wool expedition socks deliver warmth and ample cushioning for mountaineering and cold-weather hiking and backpacking.

  • Features

    • Merino wool blended with nylon and a touch of Lycra® spandex delivers durability and a dependable fit
    • Stretch nylon reinforces the heel and toe areas for durability and comfort
    • Arch band adds support

    Made in USA.

    View all REI Co-op Men's Hiking Socks
  • Technical Specs

    Best Use




    78% merino wool/20% nylon/2% Lycra spandex

    Sock Height


    Sock Cushioning

    Heavy Cushioning

    Moisture Wicking




  • Size Chart

    S M L XL S/M L/XL
    U.S. Men's 5.5-8.5 9-12 12.5-14 5.5-8.5 9-14
    U.S. Women's 4-6.5 7-9.5 10-12.5 4-9.5 10-12.5

    Sizing Notes

    For socks, please use shoe size.

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