Rubbermaid FreshWorks Produce Saver keeps produce fresher longer. The FreshVent technology filter naturally regulates the flow of oxygen and carbon dioxide to to create the optimal environment for your fresh produce. The filter lasts the lifetime of the container, with no refills needed. The elevated base lifts produce away from moisture and promotes proper airflow to prevent spoilage. The modular, space-efficient design allows for easy kitchen organization—bases nest inside each other and one lid fits multiple bases to keep cabinets tidy. These plastic containers are BPA-free and dishwasher-safe for easy care. ・KEEP PRODUCE FRESHER LONGER: Rubbermaid FreshWorks Produce Saver uses FreshVent technology to regulate airflow, so your produce stays fresher longer. ・BUILT-IN FILTER: The built-in FreshVent filter in these Rubbermaid containers regulates the flow of oxygen and carbon dioxide to create the optimal environment for your fresh produce; the filter lasts a lifetime—no refills needed ・ELEVATED BASE: The elevated base in these plastic containers lifts produce away from moisture and promotes proper airflow ・EASY-CARE: BPA-free containers are dishwasher-safe ・EASY TO USE: Simply place unwashed and uncut produce in the FreshWorks container and place container in the fridge; FreshWorks works best when only one type of produce is stored in a container ・SPACE SAVING: Modular, space-efficient design for easy kitchen organization; bases nest inside each other, and one lid fits multiple bases ・WHAT YOU'LL USE THEM FOR: Medium containers: strawberries, blueberries; large container: iceberg lettuce, spinach ・SET INCLUDES: Two 7.2-cup medium and one 18.1-cup large container and lids, for a total of 6 pieces