Eigerjoch light IN T-Shirt Men

Down T-shirt for ski touring and mountaineering

By using the lightest and best materials available as well as a set of weight-optimized features, the Eigerjoch Light IN Men's T-shirt has an unparalleled warmth-to-weight ratio in its category. Weighing only an impressive 100 grams, its low packing volume is unmatched, making it perfect as an...
    • 1013-01130

    • Denier (main material)


    • Weight

      99 g

    • Cut

      Regular Fit

    • Contains non-textile parts of animal origin (down or leather)
    • Additional stow bag for low packing volume
    • Filled with 30 g of the highest quality goose down currently available with 1,000 cuin fill power and PFC-free waterproofing treatment
    • Ultralight, super-fine woven, water-repellent 5-denier main material for maximum compressibility and minimal weight
    • Functional t-shirt silhouette for extra upper arm warmth
    • Long half-zip front zipper for reduced weight and less cold spots
    • Mammut Down 1000 cuin

      The fill power of down is rated in cuin (cubic inches per ounce): the higher the cuin rating, the greater the wadding and therefore thermal insulation per weight.

    • Main Material - Face

      100% Polyamide

    • Filling

      95% White goose down, 5% White goose feather

    • Lining

      100% Polyamide

    • Main material

      100% Polyamide

    • RDS - Responsible Down Standard

      The Responsible Down Standard (RDS) ensures that down and feathers are sourced from well treated animals. The collection of down and feathers from live birds (live-plucking) as well as force-feeding are strictly prohibited.

    • Fair Wear

      Mammut strives to ensure fair and safe working conditions in all factories making its products. To systematically improve working conditions throughout its supply chain, Mammut was the first outdoor brand to join the Fair Wear Foundation.

    • 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

    • Contains textile products of animal origin (down)

    • 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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