This twin size duvet cover set is made from 100% cotton with a 300 thread count. The set includes one 66 by 88 inch duvet cover and one 21 by 27 inch pillow sham. Woven from long staple yarn, the fabric becomes softer with each wash and provides a cool, comfortable feel for all seasons. Button closure replaces traditional zippers to protect fabric, while internal corner ties keep the comforter from shifting. OEKO-TEX certified for safety. Note: insert not included.