What sizes are offered for the Pillowcases? February 07, 2024 19:01 Updated The pillowcases that offered as part of our Cotton Blend Sheet Set are the following sizes: Standard Pillowcase: 20" x 30" King Pillowcase: 20" x 40" Related articles Which loft is right for me? How can I try Leesa in a West Elm Store? How long can the mattresses stay in the box?