Babyoov Glass Jars provide a healthy and easy way to store your baby’s meals. Why choose glass storage containers? Glass is the ideal material for storing food, and it's environmentally-friendly, neutral, and durable. Whenever you make baby food, glass is your best storage option to preserve the taste of food for longer - plus, they're heat-resistant. Safe for use in the microwave, in a pan of hot water, bottle warmer, and dishwasher. These storage containers feature a screw-cap lid with a hermetic silicone seal, ml. and in oz. markers, and a rewritable surface on the lid, where you can easily note the stored recipe and the date it was created. Completely stackable to easily store in your cupboards, fridge or freezer.