The fill power measures how much space involves one ounce of down. It shows the volume and fluffiness of the down in dress. That differs from the fill weight, that estimates the real amount or mass of used down.
The fill power estimates chiefly the volume. For instance, 600 FP means that one ounce of down fills 600 cubic inches. For estimate the relation between weight and warmth of various down coats, the calculation of fill power helps a lot.
What Is Fill Power in Down Coats?
It does reflect the quality of the down. The higher the number of the fill power, the more well the down expands.
The rating of fill power ranges from 300 until 900 and more. The most common down products have 400 until 500. You consider them low in quality because they come from immature geese and ducks and are made up of little bits.
For outside dresses, the key range of down fill power is around 500 until 900. Good down for outdoor clothings usually have at least 650 until 700 cubic inches. Very good products reach until 900, but they cost a lot.
Most outside dresses require between 500 and 900 of fill power.
A higher fill power shows more loft in the down. That creates more air pockets, so more heat stays inwardly. For same heat, you receive a longer and more compact coat with high fill power.
Coat with 900 FP down deserve attention, if you want to spare weight and space in a pack either have a stylistic winter coat. High fill power answers when the content of down is heavy or packability critical. It gives freedom from weight and bulk.
The higher the power, the less down you require for same heat. Even so, fill power does not estimate warmness of winter coats. Rather than sleeping bags, it no standardizes for coats.
You could buy expensive 800 FP coat that intends somthing another.
Goose down usually gives higher fill power than duck down. Duck down abounds more because of big consumption. For most of coats, the warmth like, but 650 FP results only in heavier piece.
High fill power ensures more heat per gram of down.
