These Secur-Pak evidence bags are supplied in a pack of 100, each measuring 9 x 12 inches. The bags are made from transparent 2.5 mil co-extruded polyethylene film that is tear-resistant, 100% recyclable, and Federal Reserve compliant. The transparent construction allows easy identification of bag contents. The bags incorporate Level 4 security features including hot and cold tamper-indicating technology, folded bottom edges, and a sequential numbering system. Each bag has a unique serial number and barcode displayed on the bag itself and on the removable, perforated top edge for record keeping. The self-sealing enclosure displays VOID graphics if tampering is attempted, and side graphics will distort when stretched or torn. Step-by-step instructions for proper handling are printed on each bag, along with non-smear writing blocks for labeling.