2, thermal conductivity: In addition, duck down itself is very poor thermal conductivity, preventing heat loss caused by thermal conduction. As a result, the warmth of duck down is particularly good.
3, small density: because duck has 2 kinds of hair outside a layer is the outer feathers, the surface layer has a layer of grease to prevent the duck underwater when the inner feathers are not easy to get wet by water! There is also a maintenance effect! The inside is called duck down, mainly play a role in insulation, they are fine and dense, but also light.
3, breathable: is only duck down can keep warm is relatively warm because the relative density of duck down is small. So the breathability is small. Warmth is better.
4, good warmth: white duck down down jacket warmth effect is particularly good. The most effective component of white duck down down jacket is the down fiber - natural protein fiber derived from waterfowl animals.
5, structural stability: and down fibers have good warmth, from its unique bifurcated shape structure caused by a high degree of fluffiness, which in turn has a strong ability to include static gas.