For businesses that handle cash deposits, security is everything. These Nadex 9x12 inch tamper-evident bags give you serious peace of mind. Each bag features FRAUDSTOPPER Level 4 security – the highest level available. The self-sealing closure has special ink that shows 'VOID' if someone tries to freeze it open with a cooling agent, and blue dots appear if they try to use heat. If the bag is torn or tampered with, the serrated edge of the seal will fracture visibly. The clear plastic is tough and recyclable. Each bag has a unique serial number and a scannable UPC barcode so you can track every deposit. There's a handy area to write deposit details, and even a peel-off receipt label inside the flap for your records. Made in North America with a lifetime warranty. Whether you're a retail store, restaurant, or any organization moving cash to the bank, these 50 bags will help ensure your deposits get there securely. A professional, reliable solution for cash management.