Best for mild nonsweaty exertion or casual wear. Fill power is diplayed in the form of a number which youll normally find stitched somewhere on the outside of a down sleeping bag or on the sleeve of a down jacket.
Down Fill Power Demystifying The Misconceptions Outdoors Oriented
Ranging from about 450 to 900 fill power is the volume in cubic inches that one ounce of the down fills up.
Down fill jacket temperature ratings. Available in extremely limited quantities The North Face utilizes 900 fill down exclusively in its premier Summit Series outerwear and gear where minimal weight and maximum. Two jackets with the same fill power can offer different warmth. Poor quality down might be between 300 and 500 fill power.
Down clothing and equipment at Webtogs ranges in fill power from 550 medium fill power to 900 very high fill power. The highest rating for natural down is Eider which has received ratings between 800 and 1200. 900 fill down is the highest quality down commercially available and considered the absolute gold standard of insulationwith an unmatched warmth-to-weight ratio it is highly compressible ultralight and amazingly warm.
So instead of giving readers temp ratings that would be entirely subjective and often inaccurate you can see that this story offers some expert tips on how to figure out approximately how warm a jacket is in the section above with the sub-head How Warm a Jacket. There are also new technologies that claim to be able to increase the fill power of down another reason why 1000 numbers have been seen in recent years. Higher fill power down offers more warmth at a lower weight.
Quality products usually have a 600 Fill Power Rating or above Range 300 to 900. For down sleeping bags a lofting power of 600-650 is considered good quality 700 -. Hi Saleem down and synthetic insulated jackets do not have temperature ratings partly because people are different so whats warm enough for one person isnt warm enough for another.
Naturally these are the rarest and most expensive of all down. Fill power can be expressed as cubic inches per 30 grams in³30 grams. Higher quality down lofts to a higher volume so a higher spec number indicates warmer down.
This is the amount of down that was put into the jacket. All other things being equal bedding or garments made with high fill power down are lighter and more compressible than an equally warm one made with lower quality down. One way to determine the quality of down is to look at its fill power.
Eider is often reserved for use in luxury goods and outdoor gear for extreme weather or climate.