Premium Deluxe Quality Rubbermaid Premier 18-Piece Food Storage Set Purple Easy Seal: Flex and Seal lids lock in freshness and are easy to seal and remove Easy Clean: Durable shatterproof plastic bases resist stains and odors for a lifetime of clarity Easy Store: Easy Find lids snap to bottom of container and to each other Base and lids nest inside each other Microwave Dishwasher Freezer Safe; Bases and Lids are BPA Free