Luigi Bormioli Lock Eat Canning, Preserving & Serving Food Jar, 4.25 oz Measures 3.4Dia x 3h 4.25 oz food jars come in a set of 6 Jar with innovative glass lid: easy to fill/ easy to close/ easy to open (patent pending detachable lid Stainless steel elastic clamp: easily removable Microwave safe without stainless steel clamp Natural rubber gasket: food safe Canning safe/ airtight safe/ freezer safe : glass jar and lid reusable over time and recyclable Easy to wash jar and lid: by hand or dishwasher Stackable food jars: storage saver Clear glass lid Natural rubber gasket Clear glass jar Stainless steel elastic clamp Marked fill level For correct assembly the gasket tab must be positioned opposite to the stainless steel clamp