Downia - Downia Luxury 50/50 Goose Down & Feather Quilt This white goose down and feather duvet with an all-seasons 3 warmth rating is ideal for use in autumn, spring and mild winter nights. It has a cassette construction which stops the fill from moving around for an even warmth at all times. Soft 233 thread count downproof cotton casing. - Features:50% white goose down and 50% feather - All-seasons 3 warmth rating for use for most of the year - Cassette construction stops fill from moving around for an even warmth at all times - Soft 233 thread count downproof cotton casing with decorative white piping5 year guarantee Downia Luxury Quilt is exclusive to MYER.Style No.