Duvet Cover Twilight has stripes in several structures in the colors: taupe, grey, blue, green and light blue. The back of the cover and the pillow case is pale yellow with a herringbone design. Twilight is made of 100% cotton satin. The duvet cover has extra long, open dubble tuck-in flap across its full width on both sides. The total length of the duvet cover, including tuck-in flap, is 260 cm.