We have created special envelopes sized to hold fingerprint and palmprint cards. They are 8 1/2" x 8 1/2" in size and have black wavy lines printed inside for security purposes. Instead of using 9" x 12" business style envelopes to mail fingerprint cards to the FBI or to other police departments, use these specially-designed envelopes. They can also be used for storing fingerprint cards in a file cabinet or on your desk. You could also use these envelopes to keep all of the suspect fingerprint cards, victim elimination prints and the latent print cards for one investigation in one envelope in the departmental report jacket or in the ID Bureau.