Quality Park® CD/DVD Media Mailers are made of extra rigid fiberboard to protect your valuable data in transit. Strong stay flat fiberboard envelopes prevent bending, scratching and dust from damaging discs. A foam liner cushion gives extra protection. Envelopes are large enough to fit several discs. For CDs & DVDs. Seam Type: Side; Flap Type: Square; Security Tinted: No; Opening: Open Side.