REI Co-op COOLMAX EcoMade Liner Crew Socks

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Wear them under your hiking socks as a barrier against chafing, or wear them alone on hot day hikes. The REI Co-op COOLMAX EcoMade liner socks are moisture-wicking, breathable and durable.

  • Features

    • The polyester yarn in REI Co-op COOLMAX® EcoMade liner socks is made from recycled water bottles
    • Nylon adds durability, while spandex offers stretch and shape retention so the fit will remain snug, wash after wash
    • Smooth, flat toe seams ensure no bunching or irritation for your toes
    • Machine wash inside out in cold or warm water; no bleach or fabric softener; tumble dry low
    • Made to reflect our love for people and the planet through the use of recycled polyester, which keeps waste out of landfills
    • Made in USA with imported and domestic yarns

    Made in USA.

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

    Best Use



    50% COOLMAX EcoMade polyester/49% nylon/1% spandex

    Sock Height


    Sock Cushioning

    No Cushioning

    Quick Drying


    Moisture Wicking





    Contains recycled materials

  • 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.

  • Reviews
    123 reviews with an average rating of 4.6 out of 5 stars

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