The BEABA 8 oz Glass Baby Food Jars are made with extra-resistant glass and don't deteriorate over time. No coloring, no deformation, etc. The BEABA glass jars resist heat and thermal shock and are safe for heating, freezing, sterilization, etc. Great as baby puree containers, small mason jars, or milk storage containers. The small glass jars have a soft silicone, easy-to-clip lid with airtight closure which helps preserve flavors and aromas of foods. These glass food storage containers have a visible graduation in ml/oz that serves as a dosage indicator. The glass food storage containers are dishwasher safe and freezer safe.