What is the inner diameter and outer diameter of the pillowcase?
Therefore, the outer diameter of the pillow refers to the actual size of the whole surface, and the inner diameter refers to the actual size of the part that can hold the pillow.
The pillowcase is not so large as to be fitted with a large pillow core. All sides of the pillowcase are sewn with a certain width that is sewn up for decorative purposes. Therefore, the outer diameter of the pillow refers to the actual size of the whole surface, and the inner diameter refers to the actual size of the part that can hold the pillow.
