Certified by Oeko-Tex standard 100 – class I, Crown Goose products go through 14 cleansing cycles and have 1000mm+ turbidity, confirming the cleanliness of our down product. Down 90%, Feather 10%. 100 Cotton Downproof Satin Fabric. 875 FP (fill power, which is a measure of "fluffiness" of a down product. The higher the FP the more air an ounce of the down can trap, thus the more insulating ability the down has. Available in four weights - 400 g / 14 oz (Cool), 700 g / 25 oz (Medium), 1100 g / 39 oz (Warm), 1400 g / 49 oz (Very Warm).