Simply put, goose down has the best warmth-to-weight ratio of any insulation...
This is because of the extreme capacity the goose down has to absorb the humidity of the body and to transfer it to the external environment (hygroscopicity), and also its ability to absorb and contain considerable quantities of air (heat insulation).
Goose down,duck down and feathers,what's the difference?
Duck Down is smaller than goose down and therefore has less elasticity, volume, resistance and lifespan.
The feather has a completely different structure than that of down; it is rigid, flat, heavier, with scarce capacity for absorbing air.
So when choosing a down jacket make sure it feathers up for warmth and has a great apres ski look.
Above. Down jacket Moncler
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