Ideal for storing homemade baby food. Kilner Kids jars are ideal for storing homemade baby food in glass rather than plastic. Making homemade healthy purees for babies, not only helps to control sugar and salt levels but it's also a cost-effective way of supplementing your child's nutritional needs. Kilner kids jars can be stored in the fridge and freezer and can be used in the microwave to heat The contents inside, ready to serve. made with an easy, non-spill push-top silicone lid.