Cuisipro 6 Ounce Glass Jars (Set of 4), Glass/Red Set of 4 jars with interchangeable lids have a 6 ounce capacity Stackable single serve jars fit perfectly in the Cuisipro Yogurt Maker, also perfect for homemade baby food Made of hygienic glass and can withstand high temperatures for sterilization Compact container is travel size Heat-resistant, BPA Free and an air tight seal Glass base is dishwasher safe. Lid is dishwasher safe - top rack