Eigerjoch IN Flex Pants Unisex

Elasticated insulated pants for mountain tours

Insulation pants for expeditions and extreme mountain tours at freezing altitudes: the Eigerjoch IN Flex Pants. The extremely light and elasticated Pertex® Quantum Air outer material is water-repellent. Stretch insulation ensures that the pants offer a perfect combination of freedom of movement and heat retention. Can be worn over hardshell and softshell pants. The full-length zipper makes putting on/taking off easier.

    • 1022-01160

    • Denier (main material)


    • Weight

      382 g

    • Cut

      Athletic Fit

    • Leg zipper pocket
    • Gusset crotch for greater freedom of movement
    • Elastic waistband on pants for perfect fit
    • Concealed fly with snap button
    • Hem and leg width can be adjusted using snap buttons
    • Unisex style
    • Full-length side zippers for putting on or taking off quickly
    • Pants stowable in leg pocket
    • Light, elasticated and water-repellent Pertex® Quantum Air outer material
    • Filled with 60 g/m2 Ajungilak® OTI™ stretch insulation for optimum heat retention and enhanced freedom of movement
    • Pertex® Quantum® Air

      Pertex® Quantum Air was designed to increase air permeability, striking a balance between windproof rating and breathability.

    • Filling

      100% Polyester

    • Insert

      85% Polyamide, 15% Spandex

    • Lining

      100% Polyamide

    • Main material

      100% Polyamide

    • bluesign® PRODUCT

      The bluesign® SYSTEM is a solution for sustainable textile production that eliminates the use of harmful substances. bluesign® PRODUCTS guarantee a responsible use of resources with a minimum impact on people and the environment.

    • PFC-free durable water repellent (DWR)

      Perfluorinated compounds (PFCs) are often used for waterproofing but are practically non-biodegradable. Mammut is committed to replacing non-biodegradable fabric treatments with more sustainable high-performance alternatives.

    • Fair Wear

      Fair Wear works to ensure fair and safe working conditions in garment factories. The non-profit engages directly with factories, trade unions, NGOs and governments to protect workers’ rights.

    • Recycled

      This product contains recycled materials with uncompromised performance and functionality. Choosing recycled materials reduces the use of virgin resources and helps promote a more circular economy.

    • Do not use chlorine-based bleach

      Do not use chlorine-based bleach

    • Do not dry clean or use solvents to remove stains

      Do not dry clean or use solvents to remove stains

    • Do not iron or treat with steam

      Do not iron or treat with steam

    • Do not pierce with needles

    • Tumble dry gentle

      Tumble dry gentle

    • Machine wash on normal cycle (max. 30° C)

      Machine wash on normal cycle (max. 30° C)

Man climbing.


Robust. Elastic. Breathable. The Eiger Extreme collection offers athletes uncompromising protection when venturing out in the most severe conditions.

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