What is waterproof down

As we all know, down is the best material for keeping warmth in common materials. Under the same temperature scale, down products are the lightest.

But the fatal weakness of down is that it is afraid of water. After absorbing water, the fluffy flowers shrink into a ball, completely loses warmth, and it is also difficult to dry.

The water repellent treatment of down is much more difficult than ordinary clothing.

Everyone knows that the water repellency of clothes will fade with washing and use, and you need to buy some anti-water repellent spray to restore water repellency, but it is obviously impossible to remove the down jacket and spray it down.

In addition, the benefits of down is a combination of light weight and warmth, so water repellent treatment can not increase the weight of down.

Sierra Designs was the first to launch a water-repellent down product. The following picture shows the DriDown technology of Sierra Designs' water-repellent down technology, which clearly shows the characteristics of water-repellent down.

Waterproof down jacket can be done: under the shower for 30 seconds, the clothes are completely dry.

Under the shower for 3 minutes, the clothes get wet, the velvety feels wet, and the clothes are put on the back of the chair for 2 hours. After the down jacket is wet, we can realize that this is a great deal. Drying speed means that the down is not absorbent.

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