WXSTAR Soft And Comfortable The Avengers Custom Zippered Pillow Cases 18x18 (Twin sides) Custom your own pillowcase that is a perfect gift for some one Designed to add sophistication and style to your bedroom Comfortable and 100% Brand New Made of 50% cotton, 50% polyester! It is zippered pillow case, with a zippered opening on the side Standard-sized pillow covers that help extend the life of your pillows