What sizes are offered for the Pillow Cases? Hunter March 24, 2022 11:26 Updated The pillow cases are offered in the following sizes: Standard Pillowcase: 20" x 26.5" King Pillowcase: 20" x 36.5" Related articles Does your mattress contain fiberglass? Are slats ok to use with my Leesa? My Box is Damaged, What should I do? Does the Premium Foam Pillow have a return trial? What is the Duvet Comforter made from? Comments 0 comments Please sign in to leave a comment.