Superior warmth to weight ratio
Down feathers are among the best insulations available. Mother Nature knows best through trial and error of the course of eons of animal life on our blue planet. The unconstrained structure of down feathers creates a great thermal insulator by trapping air. Down is actually the plumage that’s found underneath the exterior feathers on ducks and geese and consists of soft, fluffy, wispy filaments. Some products use a blend of down and feathers, but by definition, down is different from feathers.
Down insulates by trapping air and is prized for being light, easy to compress, long-lasting and breathable. Within the last few years, proprietary technologies have been developed to treat down at a microscopic level with a water-resistant application. This treatment allows down to resist light moisture without compromising loft.
All testing and performance standards are the same for duck down and goose down, so either way you can be assured you’re getting a high-quality product. However, you’ll find that goose down is often still used in the highest-end products because it is capable of reaching a higher fill-power rating than duck down. Fill power is the term used to measure down’s ability to loft, and thus trap heat. It is calculated by how many cubic inches one ounce of down can fill in a testing device. For example, 600-fill-power down means that one ounce of that down fills 600 cubic inches of space. Premium goose down can reach 900 fill-power, and potentially even higher. Duck down can achieve fill-power ratings no higher than 750 or 800. The advantage of higher-fill-power down is that jackets require less down to fill space and achieve a certain temperature rating. Less down equals a lighter product.
Obermeyer has partnered with Allied Feather & Down to provide the consumer all the relevant information that goes into using the world's finest insulation. RDS certified sourcing and traceability.