Sizes Of Duvet Sets Single : 1 x Duvet Cover (137 x 200 Cm Approx) + 1 x Pillowcase (50 x 75 Cm Approx). Double : 1 x Duvet Cover (200 x 200 Cm Approx) + 2 x Pillowcases (50 x 75 Cm Approx). King : 1 x Duvet Cover (230 x 220 Cm Approx) + 2 x Pillowcases (50 x 75 Cm Approx).