Duvet Cover slips over your existing duvet insert or comforter, creating relaxing luxury new look of your bed. Designed by Swanson Beddings, our luxury duvet cover sets are made of pure cotton with 400 thread count. Each cover in the collection is reversible and has a hidden zipper closure and ties at the four interior corners to secure the comforter or duvet insert (NOT included). They are soft, beautiful and durable. Care instructions: machine wash cold, separately with gentle cycle. Do not soak and bleach. Tumble dry with gentle cycle and low heat. Remove promptly. Warm iron if needed.