The back is extra stretchy and filled with polartec alpha another synthetic insulation that s highly breathable this helps with that sweaty back issue you might.
What is a goose down jacket.
Down is a fantastic insulator as the loft or fluffiness of down creates thousands of tiny air pockets which trap warm air and retain heat thus helping to keep the wearer very warm in cold winter weather.
A down jacket is a jacket which has been insulated with the soft and warm under feathers from duck or geese.
This is only for the sake of color matching.
Hydrophobic down is certainly very helpful in combatting moisture.
Goose down is used on the upper section of the jacket to provide maximum warmth while the lower region is filled with synthetic primaloft gold which is also water resistant.
Goose down fill 900.
The material is highly sought as an insulating material for blankets pillows comforters and jackets loft is an indicator of how good the insulation is and high quality is 300 and above clusters per cubic inch.
Most down jackets fail immediately as soon as they get wet.
900 fill down is the highest quality down commercially available and considered the absolute gold standard of insulation with an unmatched warmth to weight ratio it is highly compressible ultralight and amazingly warm.
Goose down is the fluffy layer under the feathers of geese that insulates them from the cold.