Our Goose Down Duvet is filled with 95% goose down. High quality goose down, high density facing material, three-dimensional design, uniform filing of goose down, strict inspection ensure the quality of our Goose Down Duvet . The goose downs are about only 8% of the systemic feather. The goose downs are all under the abdomen and wing of the waterfowls. The goose down is globular, soft, light and elastic. Our Goose Down Duvet is good at heat insulation due to expansion and shrinkage of goose downs when the temperature changes.