360° Vanishing Edge™ seal. Dual purpose seal, designed to 1) Create tamper resistance by inhibiting the ability to lift the lid from the base without tearing the tab. 2) Provides a leak resistant seal to maximize freshness and prevent leak. ErgoLift™ contours curvatures that create finger space for easier removal of contents from the condiment compartment. Condiment compartment is designed to accept Dart® Conex Compliments, Solo® Souffles and Solo® Ultra Clear Souffles portion containers, either lidded or unlidded, up to 4 oz. as well as all conventional pre-sealed portion containers.