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Our years of expedition experience means that we appreciate the role of base layer pants or thermal leggings during those cold-weather hikes. This additional layer under your hiking pants gives you an added layer of warmth and insulation to help prevent feeling cold.

Rab® men's base layer pants are developed in a range of styles using materials such as Polartec and Merino Wool to ensure that there will be something to suit every need. A pair of quick-drying, stretchy, insulating long johns along with a suitable base layer shirts is a must for any cold-weather layering system.

Related: All Base Layers

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  1. Orion Blue

    Men's Syncrino Leggings

    Lightweight baselayer leggings combining the performance of Merino wool and synthetic fibres.
  2. Orion Blue

    Men's Conduit Tights

    Lightweight fleece baselayer leggings for cold conditions, built with recycled materials.
  3. Beluga

    Men's Syncrino Boxers

    Lightweight boxers combining the performance of Merino wool and synthetic fibres.
  4. Beluga

    Men's Sonic Boxers

    Soft, breathable, and lightweight these go-faster boxer shorts are built for moving at pace.
  5. Master Image

    Men's Flux Pant

    Invest in versatility with a warm baselayer pant that doubles as a lightweight legging.
  6. Black

    Men's Power Stretch Pro Pant

    Light-weight fleeced pants designed for use as a base or mid-layer.
  7. Black