MK3 Thermal Socks

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We took our inspiration for these socks from the military, whose regular dives in Arctic waters necessitate warm socks under drysuit boots. Three layers of specialized materials keep your feet warm in the harshest conditions. Part of our Glacier Series undergarment line.


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    Trusted since 1943

    ABOUT MK3 Thermal Socks

    Product Details


    • Polar Fleece®️Liner Lined with a breathable, high-loft material that wicks moisture from your feet
    • PrimaLoft®️ Mid Layer Sandwiched between the fleece and nylon is PrimaLoft®️, an artificial down material that’s warm, non-compressible, breathable, and water repellant
    • StormProof Nylon Exterior The outer material is a water resistant and durable 70 denier micro-ripstop Taslon nylon to extend the life of your socks
    • Stretch Panels Specialized panels at the heel help the sock stay in place without bagging or bunching
    • Optional Layering Wear it alone or wear it with your favorite thin, moisture-wicking socks to minimize laundering
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