REI Co-op COOLMAX EcoMade Ultralight Tech Hiking Quarter Socks

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Made using yarn from recycled water bottles, the REI Co-op COOLMAX EcoMade Ultralight Tech quarter socks are light and breathable, with a sport-style fit that stays put on twisting trails.

  • Features

    • Breathable COOLMAX® EcoMade polyester wicks away moisture to keep feet drier
    • Seamless toe construction helps prevent chafing
    • Spandex yarn wraps feet for arch support
    • Stretch nylon provides durability; spandex yarns improve fit
    • Reinforced heels, toes, Achilles and footbeds stand up to wear and tear
    • 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



    56% COOLMAX EcoMade polyester/41% nylon/3% spandex

    Sock Height


    Sock Cushioning

    Ultralight Cushioning

    Quick Drying


    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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