With the 1790 glass jars with non metal lids, you can have a worry free brewing experience, at a decent volume no less. Included in this package you get 2 Half Gallon (64oz) jars, 2 Plastic Airtight lids, 2 rubber bands, and two sheets of 12"x12" muslin cloth.<p>Our jars are designed so you can brew, decorate, ferment, or store whatever your heart desires. The jars can also be heated to up to 350ºF so you can brew with your jars with ease. They are also freezer safe as well, just make sure to leave some room in the jar for the air to expand if you are putting the lid on before you place the jar in the freezer.