Keep perishable foods fresher up to 5X longer… with Freshvac™ Pre containers! These polypropylene food storage containers create a freshness-saving vacuum seal, without the use of pumps or messy throw-away bags. Simply press down on the cover to expel air; the built-in indicator button makes it easy to confirm the seal is secure. Tough, plastic containers are refrigerator, freezer, microwave and dishwasher safe. Available in either square or rectangle shape; both nest for spacesaving storage. Set of 3 plus lids.