Kids/Childrens Wall E Bedding Set Duvet Cover and Pillow Case (Twin Bed) (Blue) 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 Kids/Childrens Bedding Set. Duvet Cover Size 54 x 78 Inches. Pillowcase Size 19 x 29 Inches.