This satin pillowcase is perfect if you find your pillow case sliding off your pillow during the night. It has a hidden zipper on the side and measures 25.5" by 20.5". Now you can feel secure in protecting your hair and skin throughout the night while you sleep. This satin pillowcase comes packaged in a vinyl bag and the package insert states that the pillow case "Protects Hair While You Sleep". Hand wash in cold water, hang to dry. One per package.