PRICES MAY VARY. Pack of 100, 12" x 16" tamper resistant security bags with easy to seal, fold over closure Sealed enclosure easily distorts, revealing any tampering attempts Made of 100% recyclable, transparent 2.5 Mil coextruded polyethylene Each individual bag incorporates a unique serial number, indicated on the bag, as well as on the top perforated edge Features a non-smear writing block on the face of the bag, as well as on the perforated receipt Pack of 100, 12" x 16" Secur-Pak Evidence B