GoSecure Document Envelope Document Enclosed Peel and Seal C5 Plain (Pack of 1000) BLK71873Designed to keep transit documents clean and dry, these envelopes are made from waterproof polythene and the peel and seal sealing provides tamper proof security. The envelope's self adhesive back instantly adheres to the surface of the parcel or package. Clear and plain, they are C5 in size and supplied in a pack of 1000. Envelope for transit documents Designed to keep documents clean and dry Made from waterproof polythene Tamper proof peel and seal