JUST LANDED

SIEGE BASELAYER

£120

Our battle-tested baselayers have been developed with Polartec® Power Grid with a geometric construction that enhances moisture evaporation and supports thermal regulation. The grid design creates open air channels that...

SIEGE BASELAYER

Our battle-tested baselayers have been developed with Polartec® Power Grid with a geometric construction that enhances moisture evaporation and supports thermal regulation. The grid design creates open air channels that improve breathability and reduce fabric mass. With a high neck collar and integrated thumb loops for increased cold weather protection.

Submerged in ice-cold waters on Op Skyefall, endured sub-zero conditions on Op Chamonix and resisted hurricane-force winds on Mt Everest. SIEGE against the elements ... the first line of defence.

    The first line of defence

    Siege Base Layer

    Technical

    SIEGE BASELAYER

    Our battle-tested base layers have been developed with Polartec® Power Grid with a geometric construction which enhances moisture evaporation and supports thermal regulation.  The grid design creates open air channels that improve breathability and reduce fabric mass.  With a high neck collar and integrated thumb loops for increased cold weather protection. They’ve been submerged in ice cold waters on Op Skyefall, endured sub-zero conditions on Op Chamonix and resisted hurricane force winds on Mt Everest.

    SIEGE against the elements … the first line of defence.

    DYNAMIC MOVEMENT

    Breathability

    Wind Resistance

    Thermal Rating

    Durability

    Product Resistance

    Temperature Rating

    0°C

    Extreme

    Enduring

    Essential

    Versatile

    Lightweight

    Feature Set

    v1.0
    • Polartec® Power Grid.
    • Integrated thumb loops.
    • Contrast upper left zip pocket.
    • Stiffened storm peak
    • Internal waist draw cord and removable snow skirt are provided to help minimise heat loss from the body’s core and mitigate wind and snow ingress.
    • YKK half-zip with chin guard.

    Please refer to fabric care instructions for particular garment care. If you should have any further queries about the care of your garment please send us an email to support@thrudark.com.

    Find out about the latest ThruDark product developments here.

    ThruDark SIEGE BASELAYER

    THRUDARK TECHNOLOGIES

    DEVELOPED FOR PEAK PERFORMANCE

    Size guide

    Size
    XS
    S
    M
    L
    XL
    XXL
    3XL
    A

    Chest

    36"
    38"
    40"
    42"
    44"
    46"
    48"

    Measure at the fullest part of the chest from just under the arms

    Reviews

    Based on 37 reviews Write a review

    FAQ's