Icebreaker ZoneKnit Long-Sleeve T-Shirt - Men's

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Built to be lightweight and breathable on your high-exertion days, the men's Icebreaker ZoneKnit long-sleeve T-shirt features body-mapping technology to provide ventilation and temperature control.

  • Features

    • Icebreaker harnesses the performance qualities of natural fibers to offer an alternative to petrochemical-synthetic-based clothing
    • Cool-Lite™ fabric combines silky-soft merino wool and TENCEL® lyocell into a luxurious, lightweight blend that naturally regulates your body's microclimate
    • TENCEL lyocell is sourced from sustainable eucalyptus plantations
    • The wool contained in this product is certified to the ZQ Standard, which has been granted equivalency to the Responsible Wool Standard
    • ZoneKnit™ body-mapped technology is engineered to regulate your body temperature and let your skin breathe during high-intensity activity
    • UPF 20 fabric shields against harmful UV rays
    • Panels of Cool-Lite eyelet mesh on the back and sleeves help dispense excess heat
    • Offset shoulder seams reduce friction when you're carrying a pack


    View all Icebreaker Men's Running Shirts
  • Technical Specs

    Best Use


    Shirt Type



    Front: 52% merino wool/35% TENCEL lyocell/13% nylon; back: 51% merino wool/35% TENCEL lyocell/14% nylon

    Sun-Protective Fabric


    UPF Rating


    Moisture Wicking


    Quick Drying


    Sleeve Length

    Long Sleeve






    4.8 ounces


    Wool certified to the Responsible Wool Standard (RWS)

  • Size Chart

    S M L XL XXL
    Chest 35.75 38.75 42 45 48.25
    Waist 30.5 33.25 36 38.75 41.5
    Hip 37 39.5 42 44.5 47

    Sizing Notes

    Measurements are stated in inches unless otherwise indicated.

    CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.

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