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Gormsson -20

A tried and tested sleeping bag for extreme use

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A tried and tested sleeping bag for extreme use

The Gormsson -20° is the ultimate sleeping bag for very cold conditions. It is a true classic built on well-tried technology like the snug fitting mummy shaped design and the off-set double box chamber construction, much like a brick wall, designed to keep you warm even under extreme conditions and eliminate cold spots. It has a durable nylon shell and inside the bag, the highly insulating Norguard S-PO 85 fibre filling is wrapped in a very soft nylon. Together with the integrated footbox and the new innovative 3D neck baffle with magnetic closure, heat loss is minimized without compromising comfort and the use of Velcro is avoided.


  • Snug mummy shaped construction
  • Durable shell made of 30 D nylon
  • Soft nylon lining
  • Soft Norguard S-PO 85 filling
  • Magnetic neck baffle closure
  • Integrated foot pocket
  • Trapezoid foot box for more room
  • Easily accessible inner pocket
  • No Velcro
  • Stuffsack with compression straps

The story behind the name

The Bluetooth who Christianized Denmark

Harald ”Bluetooth” Gormsson was born in 935 as the son of King Gorm the Old and Thyra Dannebod. As King of Denmark and Norway he erected the very famous Jelling stone in Denmark, where the runic inscription says: “King Harald ordered this monument made in memory of Gorm, his father, and Thyra, his mother. The Harald who ruled the whole of Denmark and Norway and converted the Danes to Christianity.”


Sleeping bag type : Extreme


  • Comfort : -10 ℃
  • Limit : -20 ℃
  • Extreme : -40 ℃
  • Tested according to European norm EN 13537

Sleeping bag shape : Mummy

Construction : Offset Triple Box

Design features :

Fitted hood

Nordisk 3-Season, Winter and Extreme bags are all constructed with a fitted hood to protect from the cold and create the option for blocking out all cold air.

Neck baffle

Para evitar que entre frío en el saco.

Inner pocket

Easy reachable inner pocket for storing valuables.

Zipper draft tube

Preventing cold spots.

Integrated foot pocket

Hood frost tube

To keep all cold air out on cold nights.



  • Length : 230 cm
  • Total weight excl. pack sack : 2400 g
  • Body length : 195 cm - 205 cm
  • Shoulder width : 78 cm
  • Foot width : 55 cm

Pack sack

  • Type : Compression bag
  • Pack size : 30 x 45 cm
  • Compressed : 30 x 39 cm


Outer shell

Composition: 100% Nylon

Colour, Front: Limoges Blue

Colour, Back: Black


Composition: 100% Nylon

Colour: Black


Specially Nordisk developed synthetic fibre with extremely soft touch, low maintenance and significantly high loft providing optimal warmth for a the perfect sleep. Norguard S-PO 85 is non-allergenic and meets Öko-Tex Standard 100. 

  • extremely soft touch
  • significantly high loft
  • non-allergic