Mammut Eigerjoch Light IN T-shirt Midlayer

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Quick overview

By using the lightest and best materials available as well as a set of weight-optimized features, the Mammut 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 additional insulating layer for quick ski tours or downhill runs. The functional t-shirt silhouette provides warmth to the upper arms and creates a progressive layering look.


  • Ultralight, super-fine woven, water-repellent 5-denier main material for maximum compressibility and minimal weight
  • Filled with 30 g of the highest quality goose down currently available with 1,000 cuin fill power and PFC-free waterproofing treatment
  • Functional t-shirt silhouette for extra upper arm warmth
  • Long half-zip front zipper for reduced weight and less cold spots
  • Additional stow bag for low packing volume
  • Contains non-textile parts of animal origin (down or leather)
  • Weight: 99 gr.