Rigid polypropylene comic book dividers with newly-shaped write-on index tabs on both sides and extra space for stickers. New, optimized size for better visibility of the tabs: 183 x 280 mm. 25 dividers per pack. Rigid polypropylene The high quality and rigid material keeps your dividers durable and strong, even after many uses. Archival safe Keeps your comics safe and preserves the value of your collection during permanent storage. 2-sided write-on index tab Write-on index tab on both sides with new shape and extra space for stickers. Collector's grade Great for storing, viewing and organizing your precious comic book collection Acid free, no PVC This product is completely free of PVC and acidic materials and therefore ideal for protecting comics. Fits fully into comic boxes Comic Book Dividers are sized to be used with all standard-sized comic storage boxes. Fits inside the box, even when the lid is closed