Similar to a pillowcase, this black king cotton washable duvet cover set is intended to encase your duvet or comforter for added protection. With sturdy construction from 100% cotton, the covering is designed to be soft and long lasting. As a bonus, this bedding fits the best of both worlds. It was expertly designed to stay warm in the winter but cool in the summer. King sizing is perfect for the primary bedroom. A great addition to your bedroom, this duvet cover will add a soft touch of plushness and comfortable warmth. Style, durability, and comfort combine so you can rest easy knowing that you're covered duvet cover. 11.00-inch h x 15.00-inch w x 3.50-inch d.