Additionally, the cotton-poly blend sheet fabric provides a soft and comfortable sleeping surface. Cotton's natural breathability ensures you stay cool and comfortable all night long, while polyester adds strength and durability to the fabric. This combination creates a luxurious feel that is both comfortable and long-lasting.
Let’s first go over some of the most common materials used to make sheets.


Most sheet sets typically include a flat sheet, fitted sheet, and one or two pillowcases. There’s not much need for wondering if you need a flat or fitted sheet for this reason — both are useful and usually come as a package deal. Some other sheet sets, like those Casper offers, also include a duvet cover.