REI Co-op COOLMAX Ultralight Hiking Crew Socks

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The comfortable, close-fitting REI Co-op COOLMAX Ultralight Hiking crew socks are made of breathable fabric and with a seamless toe closure to prevent rubbing and chaving on the trail.

  • Features

    • Breathable COOLMAX polyester is blended with stretch nylon for durability and spandex for a great fit
    • Ultralight weight, ideal for close-fitting footwear
    • Seamless toe closure; padded heel and toe
    • Made in USA with imported and domestic yarns

    Made in USA.

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

    Best Use



    53% COOLMAX polyester/43% nylon/4% Lycra spandex

    Sock Height


    Sock Cushioning

    Light 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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