Is this warmer than a standard puffer?

The brand says it has 14% more duck down than before and a dual-layer heating design that raises outer fabric temperature by up to 3.1°C and inner lining by 2.6°C. That puts it above a basic down puffer of similar fill weight, though real-world warmth depends on layering and wind.

What does the segmented down filling do?

It divides the down into smaller chambers so the fill stays evenly spread instead of clumping at the bottom. The brand says this gives a better fit and more consistent coverage.

No hood is listed. Plan on a hat, scarf or separate hood for head and neck warmth in wind and snow.

How should I care for a duck down coat?

Use a down-specific detergent, wash on a gentle cycle, and tumble dry low with dryer balls to break up clumps. Avoid fabric softener, which coats the down and reduces loft.

Is it good for very cold weather?

A long down-filled coat like this handles typical winter cold well, especially with a sweater underneath. In extreme cold or high wind, the lack of a hood is the main gap.