Product size: 12×12, which does not include the pillow core. Package??Only 1 piece pillow cover, pillow insert not included. With hidden zipper opening design, the loading and unloading pillow is convenient and beautiful. Machine washable, gentle cycle with cold water. EASY CARE, saves you a lot of time and energy and makes your life CONVENIENT and EASIER.Do not bleach. The pillowcase has an exquisite pattern and has a variety of patterns to choose from. There is always a pillowcase that will be your favorite.