The rigid PVC used in the BCW comic toploaders contain no plasticizers or stearates. Our high quality PVC does not migrate and will not harm your comics, photos or prints, while offering maximum protection and visual appeal. These comic toploaders open on the short side, providing easy access to your comics without compromising their safety. Add that with the sleek black back, and you get an attractive and convenient solution for keeping your treasures in great condition.