Keep food fresh in Joseph Joseph's ingeniously designed snap-lock containers, which come in a range of convenient sizes. Made from BPA-free plastic, the bases and lids are color-coded for easy pairing, while the locking tabs create airtight, leakproof seals. The bases nest and the lids snap together for space-saving storage. Made of durable BPA-free plastic. Five versatile sizes range from 1-cup to 12 1/2-cup capacity and nest for compact storage. Freezer, microwave and dishwasher safe.