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.