Don't ship fragile material without using Pre-Printed Disc Mailers. Durably made from clay-coated board, they ensure your discs and their data will be delivered safely. Each envelope is structured with glued, double outside side seams for extra reinforcement. Plus, they're specially pre-printed for disc shipment, so just fill out the mailing information before inserting the CD and sealing it shut with the gummed closure. For CDs & DVDs. Seam Type: Side; Flap Type: Square; Security Tinted: No; Opening: Open Side.