This is the piece of fabric that creates a sheath or barrier between you and your pillow. Typically, a pillowcase has one opening on the short side of the fabric and extra fabric that will drape over a few inches, when placed over the pillow insert. The drape is sometimes generous and provides a decorative element to what is otherwise a largely functional piece.
When choosing bedsheets, it is important to consider factors such as material, weave, thread count, and care instructions. If softness and warmth are your priority, flannel sheets may be your best choice. For a silky, luxurious feel, satin or satin sheets may be the perfect choice. If breathability and durability are your top priorities, cotton sheets may best suit your needs.