Beaba Portions Conservation Jars are manufactured from Premium Quality copolyester. They are available in a range of colours in single, duo and triple packs. They have airtight seal lids to preserve flavour and aroma. Measuring scale for accurate portion sizes. Space for writing on the contents using an erasable pen (not supplied). Freezer, Dishwasher and microwave safe. Can be used with Babycook® for defrosting and reheating of food in accordance with instructions