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  • Marmot - Isotherm 1/2-Zip Insulated Jacket - Men's - Black
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  • Marmot - Isotherm 1/2-Zip Insulated Jacket - Men's - Black

Marmot Isotherm 1/2-Zip Insulated Jacket - Men's

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    1 Review


    The difference between breathable and air permeable.

    The Marmot Men's Isotherm 1/2-Zip Jacket's Polartec Alpha insulation redefines comfort for hardworking alpine climbers and ski tourers. Unlike most breathable forms of insulation that start breathing after you're sweating, Polartec Alpha's air permeable insulation starts breathing the moment you put it on. Alpha also feels light and lofty like down even though it's a protective synthetic. Marmot wrapped windproof and extremely durable Pertex Quantum around this insulation for long-lasting performance at high altitudes. Angel-Wing Movement ensures freedom of movement whether you're climbing up or skiing down mountains.

    • Pertex Quantum shell
    • Polartec Alpha insulation
    • Angel-Wing Movement
    • Partially elasticized cuffs
    • Hem drawcord
    • Zippered chest pocket
    • Item #MAR00GG

    Tech Specs

    Pertex Quantum (20D nylon ripstop)
    Polartec Alpha
    regular, Angel-Wing Movement
    Center Back Length
    27.75 in
    1 zippered chest
    Claimed Weight
    8.8 oz
    Recommended Use
    alpine, backcountry, climbing, backpacking, skiing, snowboarding
    Manufacturer Warranty

    Tech Specs

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    Looks cheap, works great.

      Lightweight, thin and warm for its thickness. The material is shiny and smooth which initially struck me as cheap appearing. However, now that I have used it a lot, I appreciate the functionality of it. The shiny material makes the jacket very easy to get on/off without any bunching up of the other layers; which makes it a super comfortable midlayer. Take the breath-ability claims with a grain of salt. The zipper controls that much better than the "special" insulation.