Down Jacket Temperature Guide. Our testers place tim in a chamber wearing our outerwear over everyday clothing just like what you may wear on a cold day and then our testers deliver electrical power to the wires in his copper skin to maintain a temperature of 35 c about the same temp as your skin. An 800 fill power jacket will require less down than a 500 fill power jacket to provide the same warmth. Of down will be warmer than a 800 fill power jacket with 5 oz.
As less down is required to provide the same amount of warmth jackets with a higher fill power tend to be lighter and more compressible. Here are some examples to help illustrate how fill power and down weight work together.
Here are some examples to help illustrate how fill power and down weight work together.
The number one question everyone asks themselves when browsing for down jackets is how warm will it be some brands will print temperature ratings and ranges on their products sleeping bags will generally always have them in order to assure you that if it advertises warmth in 20 degree weather the product will keep you warm in 20 degree weather. With the down weight and down to feather ratio being equal an 800 fill power jacket will be warmer than a 500 fill power jacket. The winter jacket temperature gauge. Fill power ranges from 400 to 900.
