The main differences between gray and white duck down are color, price, use, and yield

Color: The color of gray eiderdown is brownish-gray, while the color of white eiderdown is white. This is one of their most obvious differences .
Price: The price of white duck down is usually more expensive than gray duck down. This is because white duck down is produced in relatively small quantities, while gray duck down is produced in larger quantities, resulting in a relative scarcity of white duck down and therefore a higher price.
Usage: White duck down is usually used for down jackets made of light-colored fabrics, because its color does not affect the aesthetics of the garment. Dark-coloured down jackets are mostly grey duck down. In addition, if the fabric of the down product is lighter and the inner liner has a small number of layers, in order to avoid revealing the color of the filling, white duck down is generally used.
Yield: The yield of white duck down is less than that of gray duck down. This is because most of the ducks in the south are gray or black, while the number of white ducks is relatively small, resulting in a relatively low production of white duck down.
In general, the application of white and gray duck down in down jackets mainly depends on the design needs, cost considerations, and aesthetic requirements of the garment. Whether it is white duck down or gray duck down, their warmth and fluff length and fluffiness are similar, and no one is better than the other. White duck down has a higher market price due to its color and less production, and because its color is more compatible with light-colored fabrics, it has a wider range of use and higher recognition.