Flannel:Flannel is a material most people are likely familiar with from flannel shirts, but it is also a material used for bedding. Traditionally only made with wool, flannel is now made with a variety of materials. Cotton and polyester are the most common.

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.

'Sateen is thicker in nature which makes it a great option for the colder months,' says Aja Tilghman, division merchandise manager, Lulu & Georgia. 'Through a more intricate weaving technique, sateen provides both an extra soft feel and has the ability to better trap heat, making sure you stay warm on those chilly nights.'