Thomas Senf

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Mammut Longsleeve All-Year

An ongoing success story

After three successful years and positive feedback from customers and Swiss consumer protection, Mammut First Layer is moving forward to the next stage. The reworked all-year quality is tailored to the needs of ambitious outdoor sports enthusiasts. The proven Symbitech technology combines Body Mapping with three different materials made from polyester and merino wool. Featuring a new cut, fashionable appearance and improved elasticity.

The body sweats to avoid overheating. However, if moisture remains on the skin, this wet sensation can rapidly turn to cold. The more a sweating body is exposed to wind and elements, the faster it cools down. The composition and thickness of the materials is ideally tailored to the requirements of each area of the body. The extended back protects sensitive areas from chills. The use of more elastic materials and the revised fit offer maximum comfort and very high freedom of movement.

In this revised version of the Mammut underwear range, particular emphasis has been placed on the elasticity of the materials and fit of the individual garments. The elasticity of each fabric has been optimised – without compromising on performance. Together with the unique Symbitech technology, this improvement helps ambitious sports enthusiasts and mountaineers to get even more out of their activities. Symbitech is a clever combination of natural and synthetic fibres with Body Mapping in the first layer. The result is three separate materials optimised to meet the specific requirements of different areas of the body. The finest Merino wool and high-quality polyester microfibres guarantee an optimum temperature balance in all situations.


  • Contoured cut
  • Uncompromising combination of top high-end functionality and youthful design
  • 100% polyester microfiber for efficient wicking
  • Lightweight quality: merino wool and polyester mix for optimal temperature balance
  • Midweight quality: merino wool and polyester mix with waffle backing structure for optimal insulation on rapidly cooling parts of the body
  • Antimicrobial feature to avoid unpleasant odor