Using this duvet cover is a breeze. Just slip your duvet or comforter inside it, just like you would with a pillowcase. Since it's machine - washable, you can simply toss it in the washing machine when it gets dirty. Use a gentle cycle and mild detergent to keep the fabric in good condition. Avoid using bleach as it can damage the polyester material. When it comes to drying, tumble dry on a low setting. No need to worry about assembly; it comes ready to use. This duvet cover is for home use only, not for commercial purposes. Enjoy the all - season comfort it provides in your bedroom!