FOUR PACK 1 GALLON GLASS JARS - You will receive (4) One Gallon large glass jars with (4) plastic airtight and leakproof lids. Also included are four 7 rubber bands and four sheets of 8x8 muslin cloth that is breathable to let in air but keep out contaminants and bugs. This is the perfect kit to get started brewing Kombucha, Tea, and other drinks. *Scoby and other ingredients are not included in this set. HEAT RESISTANT UP TO 350ºF - Our 1 Gallon wide mouth jars are heat resistant up to 350ºF which means you can pour your bioling water righ