ProAmpacs line of vault bundle federal compliant security bags are designed with tamper-evident technology for high-risk applications. Our security bags feature an easy-to-use closure that provides a high degree of security against mechanical, freeze, heat, solvent and moisture methods of attack. Once closed, unauthorized attempt to open the bag will cause the closure to void.Features include:Available in clear or opaque film External pocket available Up to 20 bundles of cash Easy-to-write-on surface Sequential numbering and barcodes Tear-off receipts with matching bag number Custom solutions available upon request