The Arm & Hammer Waterproof Pillow Protector 2 Pack in standard Queen size is a set of pillowcases made of polyester material. It features a zipper closure for easy installation and removal. The pillow protectors are waterproof, breathable, and have an antimicrobial feature. They are machine washable for easy care and come in a classic white color. Perfect for use in the bedroom, these protectors provide a safe and clean barrier for your pillows.