This duvet cover set is made from washed cotton, which is stronger than the common cotton material. This cotton fabric has good air permeability and good moisture absorption. The hidden double zipper design easily allows you to insert and remove your duvet when needed. The four corner ties ensure that your comforter remains immovable in the cover. This simple duvet cover can cover and protect the comforter from being dirty and also can decorate your bedroom. Naturally cotton is very safe for your family's skin and health. This ultra-soft duvet cover keeps you comfortable all through the night. Package includes twin: 1 duvet cover: 68" x 90", 1 pillowcase: 20" x 30" queen: 1 duvet cover: 90" x 90", 2 pillowcases: 20" x 30" king: 1 duvet cover: 104" x 90", 2 pillowcases: 20" x 36" (comforter is not included in the set. Pillows are not included in the set).