Protect products that need visible evidence of opening with 12" x 15" 4 Mil Tamper Evident Clearzip¨ bags. The tamper-evident closure is made to show when a package has been opened, helping you maintain chain-of-custody procedures for parts, documents, evidence, pharmaceuticals, samples, and high-value merchandise. At 4 Mil (.004 inch) thick, these clear polyethylene bags provide more puncture and tear resistance than lighter-gauge bags used for routine packing. The transparent film keeps contents visible for receiving, inspection, inventory checks, and identification without opening the package. Each bag measures 12 inches wide by 15 inches long, giving operations teams a practical format for flat or moderately sized items.