Yin & Yang Double Duvet Cover Set White Redefining beauty sleep with SeaCell the Yin and Yang Duvet Cover is the skin friendly answer to a good night's sleep. SeaCell is a lyocell fiber derived from Icelandic sea algae, known to fight free radicals and contains rich nutrients that are friendly to skin. Made of ultra-soft sateen, this solid-meets-patterned duvet cover also includes a U-shape zipper closure for a wider opening, to make inserting your comforter a breeze. Includes Pair of Pillowcases