This luxury quilt by Sienna Living features 50% Duck down and 50% Duck feather filling. Having a lower ratio of down cluster means that this quilt will not insulate as much when compared to a higher down filled quilt such as the Sienna Living 80% Duck down 20% Duck Feather quilt. You may still need a blanket on top on a very cold winters night with this quilt but this will all depend on the individual and how much you feel the cold. The Sienna Living 50% Duck Down 50% Duck Feather quilt is Australian Made with quality Australian feather and down. The quilts are a cassette style or box walled construction which is a non adjustable design. Featuring a series of individually filled squares, which maintain an even distribution of warmth. This quilt is ideal for all seasons. (Note: 1 blanket weight being summer weight on our scale). All our duck/goose down quilts and pillows use ethically-sourced Australian duck/goose down and feather. Warmth without weight Fluff ability - better insulation Drape ability and softness Durability and lasts a lifetime Ability to breath - Wake up refreshed Washable and dry cleanable Proudly Australian - 5 Year Guarantee Single 850 gram fill Double 1000 gram fill Queen 1200 gram fill King 1400 gram fill Super King 1800 gram fill SIZING Quilt Sizing (AU) Single 140x210cm Double 180x210cm Queen 210x210cm King 240x210cm Super King 270x240cm