Hello, welcome to yanjinbin store! You certainly have an eye for good things!About pillowcases:1.When you are tired, it will provide you with excellent support to lean on or lie down to relieve stress and discomfort. Or take a nap in the office, remove the fatigue of work in the morning and face the work in the afternoon more energetic.2.We have provide a variety of themes for you to choose from, complementing various decoration styles. It is suitable to be placed in bedrooms, sofas, chairs, terraces, bay windows, etc. A simple action can add a bright spot to your room. For more choices, please search "Pillow Cover" in our shop.3.This pillowcase is on the outside of the pillow, which can protect the pillow from dust. You only need to take off the pillowcase to clean it, which is simple and convenient.4.The zipper design makes it easier to stuff into the pillow, making it easier to clean.installation steps:Step1: prepare a pillow that is the same size as or smaller than the size of the pillowcaseStep2: Fold the pillow core in halfStep3: Put the folded pillow core into the pillowcaseStep4: Insert all the pillow cores, confirm that the four corners are aligned, and then close the zipper.Thank you for seeing here and see you next time!I wish you a good day!