Survivor Tyvek Tamper-Indicator Envelopes, 10in x 13in, Self-Adhesive, White, Box Of 100

When the envelope is unsealed, the word “OPENED” appears on the flap

• Brings an extra level of security to your important, confidential documents.
• Envelopes cannot be repaired to hide any evidence of tampering.
• Made of 14-lb Tyvek material.