Performance DOWN
The Performace DOWN bags are individually optimised for the respective temperature area the bags are intended for. A down bag normally has a wider range of use regarding temperatures compared to a fibre filled bag. It is more comfortable when the temperature is rising compared to a fibre filled bag which easily can feel “sticky”.
Some information that will assist you with researching or buying a down sleeping bag to suit your needs.
The quality of down is measured using two criteria: its Fill Power and Down Content.
The Fill Power of down measures the strength of the down, or its ability to resist compression, and how well it can loft. A Fill Power rating of 600 indicates that a 30g sample of down will occupy 600 cubic inches when subjected to a standard compression force. The higher the Fill Power the better the down. Down do not all perform equally. Bags with down of a higher fill power give more loft and warmth for the same weight.
The US system of measuring Fill Power differs from the European system so, when comparing qualities you need to take into consideration that the US system will appear to give a better Fill Power, for example:560+(EU) = 610+(US), 660+(EU) = 725+(US) and 750+(EU) = 850+(US). Nanok uses the European system.
Down is graded according to the mix of pure down clusters and small feathers. This is represented as a percentage ratio, for example: 80/20, 90/10. Down which is quoted as being 80/20 indicates that it comprises 80% down cluster and 20% small feather.
The construction utilised in a down sleeping bag is as important as the down filling itself. Optimal sizing an construction of channels and down fill is paramount to avoid cold spots and low thermal efficiency.
The quality of down is measured using two criteria: its Fill Power and Down Content.
The Fill Power of down measures the strength of the down, or its ability to resist compression, and how well it can loft. A Fill Power rating of 600 indicates that a 30g sample of down will occupy 600 cubic inches when subjected to a standard compression force. The higher the Fill Power the better the down. Down do not all perform equally. Bags with down of a higher fill power give more loft and warmth for the same weight.
The US system of measuring Fill Power differs from the European system so, when comparing qualities you need to take into consideration that the US system will appear to give a better Fill Power, for example:560+(EU) = 610+(US), 660+(EU) = 725+(US) and 750+(EU) = 850+(US). Nanok uses the European system.
Down is graded according to the mix of pure down clusters and small feathers. This is represented as a percentage ratio, for example: 80/20, 90/10. Down which is quoted as being 80/20 indicates that it comprises 80% down cluster and 20% small feather.
The construction utilised in a down sleeping bag is as important as the down filling itself. Optimal sizing an construction of channels and down fill is paramount to avoid cold spots and low thermal efficiency.
Down constructions
Box wall construction is the most efficient construction as the down is held in place using “walls” of material dividing the channels. These walls are not straight to avoid cold spots.
Box wall construction is the most efficient construction as the down is held in place using “walls” of material dividing the channels. These walls are not straight to avoid cold spots.
A trapezoid construction keeps the down in place nicely, and prevents cold air to get through the seams.
2 layers for maximum insulation. 2 layers of down with opposite walls. Mainly used in extreme winter bags.
This construction uses less material and is the obvious choice for lightweight bags. As the walls are slanted it is always insulation behind the wall, and no cold spots.
90/10 down with Fillpower of 600+ (EU) gives performance, soft feel and excelent durability. The mix of down and feathers are optimized for the best performance and compressibility and with comfort in mind.
the ground. This reduces heat loss and the zipper is more accessible for opening and closing.
Down Jackets
Expedition PRO
Gateway PRO
Firewall PRO
Synthetic Clothing
SF Reversible Jacket
SF Reversible Trousers
Arctic Reversible Jacket
Expedition PRO
Gateway PRO
Firewall PRO
Synthetic Clothing
SF Reversible Jacket
SF Reversible Trousers
Arctic Reversible Jacket
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