Neo Online’s quality card mailers can be used for several purposes. These card mailers come with hot melt adhesive peel + seal / self-seal strip on the closing flap, for complete security. It also has hot melt glued seams for added strength. This card mailer is suitable for CD cases will fit single, double, 3-way, 4-way, 6-way CD case and 7″ vinyl records. You can easily fit two 7″ Vinyl records into a single mailer. It can also be used as 7″ single mailer without stiffeners. These mailers can provide the ultimate protection to your cases.