A duvet cover is the cloth case that encases your duvet and closes with buttons, snaps, or zippers. It is commonly made of cotton or polyester. It makes washing bedding simpler, gives more design flexibility, and even provides a distinct sensation beneath the covers.

Rough, heavy, and less flexible
Made in the same weave as sateen, but usually in a synthetic material like polyester as opposed to cotton, satin bed sheets are perfect for anyone that wants to create a romantic bedroom aesthetic.
Sateen Sheets
Dobby