Philips Avent Natural Response Airfree Bottle 260ml adapts to your baby's natural feeding rhythm, making bottle feeding easier. The teat has a unique opening that only releases milk when your baby is actively sucking, allowing babies to drink, swallow and breathe at their natural pace, just like at the breast. Designed to make feeding easier AirFree vent is designed to offer additional protection against feeding problems by preventing air from entering your baby's tummy while feeding in an upright position. 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.