Which size pillowcase should I buy?Updated a year ago

MATTEO makes 2 sizes of pillowcases: a queen pillowcase to fit a standard (20” x 26”) and queen pillow (20” x 30”) and a king pillowcase to fit a king pillow (20” x 36”). Our queen pillowcase will be slightly long on a standard pillow, but will keep either a standard or queen-sized pillow fully protected.