With these reusable plastic baby food jars, making nutritious and delicious homemade baby food has never been easier! The Sage Spoonfuls 12-pack of 4oz plastic baby food jars can hold up to 48 ounces of homemade baby food, breast milk, formula powder, and snacks. The plastic jars are safe for use in the fridge and freezer and can also be used in the microwave or dishwasher with the lids removed. When using the storage jars to warm frozen baby food, allow the contents to thaw partially before heating in the microwave or a steamer. These reusable plastic baby food jars come with a twist-off lid that is easy to grip. The plastic jars can also double as a freezer popsicle mold for a homemade, refreshing snack. Each jar holds 4 ounces of baby food with measurement marks up to 3 ounces for easy portion control. The plastic jars and lids are free of BPA, lead, phthalate, PVC, and cadmium. The jars and lids are made in the USA.