The ECO STAT Security Closure System is the most technically advanced plastic bank deposit bags closure system on the market today. It is easy to use, tampering is easily identified, and it is the most secure closure available. Designed for use as a tamper evident plastic night deposit bag, change orders, and internal transfer of currency (bag includes serial number with barcode). Tamper evident when exposed to extreme cold such as Freon Component Cooler or dry ice, as well as when exposed to extreme heat, or the solvents and other chemicals. Easy visual verification of seal condition. ECO STAT Security Bank Deposit Bags are approved and accepted by the Federal Reserve. Self adhesive 3 1/2in x 5 1/2in document pockets are available.