Lid specifically designed to work with seven sizes of the Dart TamperGuard™ Snack Boxes (sold separately). TamperAlert™ Tab protrudes upwards when torn, alerting the customer that the container has been opened. "Do Not Purchase if Tab is Torn" message and "Lift" embossing, 360° VanishingEdge™ Seal that creates tamper resistance as well as a leak resistant seal. Food Container Type: Lid; Material(s): PET - Polyethylene Terephthalate; Material Type: Plastic; Color(s): Clear.