Self-sealing adhesive closure has security features that exceed bank requirements for levels of tampering evidence. Security seal will display "VOID" message and rip if tampered with extreme cold source. Blue dots will appear on security seal when tampered with heat source. "Stars" on security seal will be distorted or disappear if exposed to salvia, solvents and chemicals. If seams are cut and resealed, microprint along sides will be missing or distorted. Water- and tear-resistant. Alphanumeric number, bar code and receipt strip for tracking. Destination, amount, sender and much more can be written directly on bag in yellow shaded area. Meets Federal Reserve Standards for shipping currency. Sealed back pocket stores deposit ticket and paperwork.