Security envelopes for documents
Usually goods transportation is accompanied with the corresponding documents. Put them in such durable, moisture-resistant security envelope and you can be sure that no one else will have access to the documents.
Security envelopes are most often used to deliver documents to the consignee, for customs control, etc. Security envelopes are made of polyethylene (very durable) and are self-adhesive. The gluing area of the security envelope has high degree of security. If someone has tried to open the security envelope, it will be visible instantly.