The right lid is always at hand. Lids snap to base and to other lids. 1 lid fits multiple bases. Bases and lids nest inside each other for easy storage and space saving. Super-clarified base to see contents. Square and rectangular shapes preferred for organization. Safe for use in freezer, microwave, and dishwasher. Set includes: (2) 5 cup containers with lids, (2) 1.25 cup containers with lids, (2) 2 cup containers with lids, (2) 3 cup containers with lids, (2) 5 cup containers with lids, and (2) 7 cup containers with lids. Racer red lids.