Keep produce fresher longer with the Rubbermaid fresh works 2. 5-Cup produce Saver. Revolutionary Fresh Vent technology creates an optimal environment for fruits and vegetables by regulating the flow of oxygen and carbon dioxide in and out of the produce container. The crisper at the bottom of the food container elevates produce away from moisture and promotes airflow to help prevent spoilage. The built-in lid filter never needs to be replaced and will last a lifetime. Longer lasting produce means fewer trips to the grocery store.