White duck down down jacket is very good at keeping warm. The most useful component of white duck down down jacket is down fiber derived from the natural protein fiber of waterfowl animals.

And the reason why the down fiber has good warmth, from its unique forked form structure brings a high degree of fluffiness, and thus has a strong ability to contain still air. White duck down is down in the form of ruffles and flakes called feathers. Because down is an animal protein fiber, globular fibers densely covered with millions of tiny triangular pores, it can contract and expand with temperature changes, resulting in thermoregulation function, you can isolate the cold air outside.

Advantages of white duck down

Duck down is very fluffy, with a lot of air in the center, which prevents the air from flowing and causing the heat to dissipate. And duck down has poor thermal conductivity, which can stop heat loss caused by thermal conduction. Duck's two kinds of hair outside a layer is the outer feathers, the surface layer of grease can prevent the duck is wet, the inside is called duck down, mainly play a role in insulation.

From the test of fluffiness, down than silk, cotton and other warm materials are higher than a grade, such as the standard 450-degree fluffy 90 duck down is also better than silk and cotton fluffy to a ? Some, so its economic value is higher than other warm materials.

80 white duck down and 90 white duck down means, 80 white duck down down filling only accounted for 80 percent, of which 20 percent is the composition of the feathers. And 90 white duck down is filled with ninety percent, of which only ten percent is the composition of feathers. So if the same quality, 80 white duck down down content than 90 white duck down need to be lower, natural warmth will be worse.