Fitted Sheet: This sheet should cover both your mattress and your mattress pad, providing a soft surface to lie on. Deep corner pockets have a little extra wiggle room for thicker mattresses or mattresses with a big pad or bed topper.
Flat Sheet: A staple of any bed linen set, flat sheets are the first layer of the bed that you can use to cover yourself as you sleep. Choose your sheet set fabric based on temperature - cotton and linen are warm, yet lightweight and ideal for summer months, while sateen and flannel are cozier in the winter months.