The TripLOK Tamper Evident Bag set the standard for security and Federal Reserve Bank compliance. By far the highest performing security bag in banking, the features found on each bag help reduce losses from theft while at the same time improving efficiency of your vault or cash transport operations. The large 20" x 28" dimensions make the TripLOK ideal for not just storing bulk cash, but any other valuable item that you need to ensure travels or stores tamper-free for safety and security.