We have worked with down as an insulation for more than 40 years and we only use down that meets the highest quality standards. This means that a Fjällräven down jacket or sleeping bag offers an unbeatable ability to insulate in relation to its low weight. You will also notice how well our down products can be compressed to take up minimal space in your pack. When you buy a down product, you should primarily check to make sure it has a high CUIN and a good blend of down and feathers. You can read more below about what this actually means.
High quality down products are often rated on their "fill power". Fill power is a measurement of buoyancy or "fluffiness". It measures how much of one cubic inch is taken up by one ounce (27.3 grams) of down. This is called CUIN (cubic inch per ounce) or fill power. The higher the value the better the insulation.
A down product with a higher fill power weighs less and is more compressible than a similarly warm product made with a lower quality of down. Fill power of 400–450 is considered to be average quality, 500–550 good, 550–750 very good and 750+ excellent. Many of our down products have a fill power of more than 600.
Another factor that determines the features of the down jacket, sleeping bag or other garments is the blend of down and feathers. Down binds more air than feathers and also offers better insulation. The higher the percent of down, the higher the insulation properties given the same weight. A description of "90/10" means that 100 grams of padding consists of 90 grams of down.
Down's main features: Down is a natural product but it still offers the best insulation on the market. It is also extremely lightweight, and garments made from down can often be compressed to take up little space in the pack.
The high quality down that we use in our garments and equipment comes from the food industry and is tested in accordance with U.S. standards. We use only one down supplier, with whom we have a close, active relationship during the entire production process. Our supplier has signed our Code of Conduct, which encompasses the rights of the animals and and an agreement that forbids the picking of down from live birds. We regularly monitor our down process via both planned and unplanned visits by our in-house quality assurance team.
• Read more about the origins of the down and our strict down process >>