Solid White 300 Thread Count King/California King Size 3PC Duvet Cover Set 100 % Cotton with button enclosure 100% Cotton Duvet Set 100% Combed Cotton 300 Thread Count Duvet cover is closed by clear and hidden buttons for a neat and tailored look King/Calking Duvet Set: 1-Duvet Cover 106x92" 2-Pillow Shams 20x36" each Duvet is to duvet cover as pillow is to pillowcase. A duvet cover is a protective layer that slips over the duvet and has a closure. Care Instructions: Machine washable in cold water