Freshvac™ plus containers keep foods fresher up to 5x longer! A freshness-saving vacuum seal is the secret—simply press lid to expel air; indicator buttons show the seal is tight. No mess, no pumps or bags needed! Plastic containers are refrigerator, freezer, microwave and dishwasher safe. Set of 4 sizes with lids: 1, 3-1/2, 6, 9-cup capacities (6-cup has removable dividers and crisper tray). Stack or nest to store.