Nanobébé's award-winning Breastmilk Bottles have been redesigned to be better than ever! Featuring a brand-new, clear, one-piece base that's easy to clean and that requires almost no assembly. Our Breastmilk Baby Bottles are shaped like mom for instinctual connections and smooth breast-to-bottle transitions. They warm safely and evenly 2x faster than standard bottles, helping to preserve vital breast milk nutrients and prevent bacterial growth. They also stack to save space and are easy to clean! This baby bottle set is a great addition to your baby registry or as a gift any expecting parent will love. * The Only Baby Bottle Designed for Breast Milk: Baby instinctively connects to the bottle's breast shape, which encourages smooth transitions between breast and bottle.