The TamperAlert™ tab sticks up when torn and, with the "Do Not Purchase If Tab Is Torn" message on the lid, lets customers know when the lid has been lifted. The specialty lid inhibits the ability to lift it from the base without tearing the tab and provides a leak-resistant seal that maintains freshness. This four-compartment container is great for bistro boxes, salads and endless snack combinations. Put your food on display with exceptional clarity and durability, made from PET.