Turtles Brothers Bedding Set - Single(441173222) 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. Single/twin bed set with reversible Teenage Mutant Ninja Turtles design. Duvet cover: 54in x 79in, Pillowcase: 19in x 29in (all approx). 100% Polyester.