Comic book boards are sturdy, flat pieces of cardboard or similar material used to protect comic books during storage and transport. They help maintain the comic's shape and prevent bending or creasing, ensuring that the artwork and pages remain in good condition. These boards come in various sizes to fit different comic book dimensions, typically matching the standard size of comic books. Collectors often use them in conjunction with comic book bags to create a protective sleeve, preserving the value and quality of their collections over time.