Philips Avent's Glass Natural bottle features a Natural Response nipple, allowing babies to control their milk intake, mimicking breastfeeding. The nipple's unique design releases milk only when the baby drinks, preventing flow during pauses. The wide, breast-shaped nipple with a soft feel promotes easy combination of breast and bottle feeding. A no-drip design and anti-colic valve ensure comfort and reduce discomfort. The bottle's ergonomic shape is easy to hold, and its wide neck simplifies filling and cleaning. Crafted from premium, BPA-free borosilicate glass, it's heat and thermal shock resistant, safe for fridge storage, warming, and easy to wash and sterilize. Natural response nipples come in flow rates 1-5, adapting to your baby's growth. Includes: 3 4oz Glass Natural bottles with Natural Response nipple flow 2.