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. Quality Duvet Cover Bedding Set. Full Set: Duvet Cover 78 in x 78 in and 2 x Pillowcase. Twin Set: Duvet Cover 78 x 53 Inches and 1x Pillowcase. 50% Cotton, 50% Polyester . Machine Washable.