Size:Twin ï¾ |ï¾ Color:White/Blue Duvet set with Doctor Who Tardis design. Available in Single and Double sizes. Single set includes one pillow case, Double Size set includes two pillowcases. Size: Single- 54in x 79in. Double- 79in x 79in. Pillowcase- 20in x 30in. 50% Cotton, 50% Polyester. Machine washable.