Philips Avent natural response glass bottle 240 ml adapts to the baby's natural feeding rhythm, making it easier to combine breastfeeding and bottle feeding. The teat has a single opening that only releases milk when the baby actively sucks, allowing babies to drink, swallow and breathe in their natural rhythm, just like at the breast. Pharmaceutical grade, heat resistant glass The bottle is made of high-quality borosilicate glass, which is resistant to heat and thermal shock. Therefore, it can be safely stored in the refrigerator, heated and is also suitable for sterilization. Characteristics: The wide, soft and flexible teat is designed to mimic the shape and feel of a mother's breast, helping baby to feed comfortably. The anti-colic valve is designed to keep air out of your baby's tummy during feeding to reduce colic and discomfort. The teat opening is designed to release milk only when the baby is feeding. In this way, you can prevent milk loss at any time. The wide neck of the bottle makes it easy to fill and clean. It only has a few parts for quick and easy assembly. The ergonomic bottle is easy to hold at any angle, providing maximum comfort during feeding. It is recommended for babies from 1 month of age. Store in a cool, dry place.