ComSaf Airtight Glass Food Storage Jars Set of 6, 600ml Clear Glass Food Storage Container with Sealing Wooden Lid, Stackable Spice Jar, Round Kitchen Canister for Sugar, Tea, Coffee bean, Pasta[Healthy Choice] This round glass food jars with lids is made of food grade high borosilicate glass. They are safe, BPA free, non toxic, freezable, resistant to corrosion and high temperature. [Airtight Food Jar] The kitchen glass food storage containers use bamboo lids and all seal with a silicone sealing ring for a better airtight space to prevent the food from getting wet and gain longer freshness time and longer storage time. [Widely Use] The food