Seal n' Vac 7 pc. Round Containers Set Includes 2.75 Cup, 4.23 Cup, 7.6 Cup and Pump Easy to use vacuum pump maximizes air removal - so food stays fresher longer Heavy Duty Containers - Strong enough for freezer, refrigerator, dishwasher and microwave (with lid removed) use Container is made from BPA Free polypropylene; Safe for microwave (with lid off), dishwasher, freezer, refrigerator and pantry Leak resistant Lids with heavy duty snap down hinges keep contents safe without spillage Heavy Duty Valve and Gaskets - Holds the vacuum and removes for easy cleaning