Titan 12 Piece Round Food Storage Box Set Includes Rectangle 3 x 0.9 cup; Round 3 x 0.8 cup BPA free airtight container with a unique locking method for total freshness Safe for reheating, freezing and dishwashing Durable 4-latch system with silicone gasket creates airtight seal that won't leak Crystal clear and impact resistant, it stands up beautifully to daily use