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Mammut Kompakt Down Winter (Long)

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Zip Side

The Mammut Kompakt Down Winter is a longer version of the ultra-lightweight, high-quality winter down sleeping bag, that offers superb thermal efficiency for a surprisingly low weight. 

The ultralight materials and regular cut make the Kompakt Down Winter a very comfortable and lightweight sleeping bag. Winner of a number of best in class awards, this sleeping bag has amazing thermal efficiency for its surprisingly low weight thanks to the high-quality, ethically sourced (700 cuin) European duck down and modern H-chamber construction - which keeps the weight down and prevents down migration. This longer winter specific sleeping bag is perfect for taller people who want a bag for cold conditions down to -7 degrees centigrade. 

Mammut's Trinity Construction serves to provide even better protection from the cold. This consists of an insulated draught collar, insulated head and foot sections as well as an adjustable hood that allows for a large field of view. The Kompakt Down Winter’s zip is also equipped with a flap to further prevent cold spots. With reliable warmth in all but the worst conditions, low weight and small pack size, the Mammut Kompakt Down Winter is ideal as a general purpose winter bag.

More Help? For further assistance on choosing your down sleeping bag, we have an article explaining fill power, the pros and cons of down over synthetic insulation and more info on caring for your bag available to view here: Down Sleeping Bags.


  • Trinity construction provides greater protection and better insulation in foot and head areas
  • 30D Nylon Face Fabric - 100% Polyamide
  • Performance Hood with Advanced Visibility: a full view with the hood closed and very good protection against the cold
  • Enhanced comfort and insulation in foot area
  • Internal pocket with Hook and loop fastener
  • Contains textile products of animal origin (down
  • Includes compression sac and storage bag


    • Maximum body size: 195 cm
    • Inner bag length: 210 cm
    • Inner width in foot area: 50 cm
    • Construction type: H-Chambers - prevent down slippage
    • Temperature limit: -14 °C
    • Comfort temperature limit: -7 °C
    • Maximum inner width: 78 cm 
    • 30D Nylon Face Fabric - 100% Polyamide
    • Filling: 750g of White European duck down 
    • Fill power 700 cuin
    • Packed size: 24 x 48 cm
    Weight: 1270g
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      5 Based on 1 reviews
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        Ignacio L.
        Mammut down winter

        Great! Comfortable packable and smooth. Quality