No Colour Duck Feather & Down Duvet. Stay warm on colder nights with our naturally cosy duck down duvet, with pure cotton cover for complete breathable comfort. Stay warm on colder nights with our naturally cosy duck down duvet, with pure cotton cover for complete breathable comfort. A wonderfully cosy bedding option, this duck down duvet is naturally lightweight and warm. Machine washable. Outer: 100% Cotton. Filling: Lightweight Duck Down Natural duck down filling Pure cotton outer In a range of sizes Natural feather filling