swanson beddings serene 3-piece 100% cotton bedding set: duvet cover and two pillow shams (queen) swanson beddings designed by swanson beddings, this beautiful duvet cover set will brighten your bedroom. duvet cover slips over your existing duvet insert or comforter, creating relaxing luxury new look of your bed. the bedding set is made of 100% soft cotton (300 thread count). the cover is reversible and has a hidden zipper closure and ties at the four interior corners to secure the comforter or duvet insert (not included). it is 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.