A down jacket is a type of jacket that is insulated with the soft and warm under feathers from ducks or geese. The down filling is filled in making this quilted jacket to trap warm air in the air pockets and repel the cold air, keeping the wearer warm in cold weather. The air pockets created by the bulk of the feathers allow for the retention of warm air. Down jackets vary in terms of warmth, and they can be lightweight or heavy, depending on the amount of down filling used. The down fill of a jacket will be either goose down, duck down, or a combination of the two. Down jackets are known for their compressibility, which makes them easy to pack and transport.

Some key features of down jackets include:

• Fill Power: This is a measure of the quality of the down filling, and it refers to the fluffiness and ability of the down to trap air. Fill power ranges from 400 to 900, and jackets with a higher fill power tend to be lighter and more compressible.

• Packability: This refers to the ability of the jacket to be compressed and packed easily. The air clusters in the down filling allow the jacket to be compressed and packed without losing its insulating properties.

• Types of Down Jackets: There are different types of down jackets, including lightweight down jackets, midweight down jackets, and packable down jackets.

When choosing a down jacket, it is important to consider how you intend to use it. Lightweight down jackets are great for shoulder seasons, warmer winter days, or as a midlayer for skiing, while heavier jackets are better for extreme cold weather conditions. It is also important to consider the fit of the jacket, as it should not be too fitted or too loose, allowing for adding layers underneath but ensuring it’s not too roomy as cold air could get in through the hem and arms.