Down is the by-product of a renewable resource, it is biodegradable and recyclable, it will last for decades, and it allows you to lower your thermostat. We only use RDS Responsible Down Standard Down for all our down coats and puffers. Every process of the down supply chain has been audited and approved by a professional third party body and confirmed to meet certification criteria by Control Union.
Visit responsibledown.org for more information
The many individual plumules of down allow it to mold to your body. Its high warmth to low weight ratio makes it easy to wear or sleep under, and its ability to wick away moisture and to breathe avoids the clamminess issues that are sometimes felt with synthetics.
Of all insulations, down will give you the greatest warmth for the least weight. Each ounce of high quality down has about 2 million fluffy filaments that interlock and overlap to form a protective layer of still air that keeps warmth in and cold out.
When cared for properly (washed regularly and stored open in a cool, dry place), down will maintain its loft and insulation for a lifetime.