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 8"x8" 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 right into it and begin brewing your Kombucha scoby, Sun Tea, or any other hot liquid without having to wait for the water to cool down. AIRTIGHT & LEAKPROOF LID - Unlike other sellers, our lids are high quality and will not break. The 100% BPA Free plastic lids come with a removable seal to make it airtight and leakproof. It will also not corrode or rust like metal lids. 100% BPA and TOXIN FREE - Our large glass jars are USDA certified food grade which means that they are safe for all types of food and liquid. This is great because you do not have to worry about harmful chemicals coming into contact with your food or liquids. LIFETIME MANUFACTURER WARRANTY - If for any reason you are not happy with your One Gal glass jars, just send them back to us for a prompt and full refund. We are so sure about the quality of our product and that it will provide a lifetime of brewing, fermenting, and storing that we provide a manufacturer warranty against any and all defects that come from normal use.