Catherine Lansfield Home Cotton Rich Birdcage Blossom Duvet Cover Set (Double) (Duck Egg) Please note: This product is a UK import, this duvet cover supplied is slightly smaller than the standard US duvet size, it will fit but the duvet may fold at the edge when covered. This is not a comforter but a cover for a duvet. Cotton rich easy care bed linen duvet set with Birdcage Blossom design. Adds contemporary designer style to your bedroom. Available in Single, Double and King Size.