The BPA-Free Philips Avent Anti-Colic 4 Ounce Bottle promotes the health and comfort of your baby. Whether you are breastfeeding, bottle feeding, or combining the two, this Anti-colic bottle support your choices. Developed with extensive research and clinical trials, this Anti-colic BPA-free bottle is proven to reduce colic and discomfort. Designed for infants, this Anti-colic bottle has a 4-ounce capacity and an extra-soft silicone Newborn-Flow nipple with one hole, making them ideal for medium-sized feedings. This bottle also comes with two additional Slow Flow Nipples which has two holes and is designed for babies who are at least one month old and for breastfed babies of all ages. As with breastfeeding, babies can control the flow of milk themselves, which reduces overeating and spit-up. </br>Features: </br>Clinically proven to reduce colic and discomfort. Anti-colic valve integrated into the nipple vents air into the bottle and away from baby's tummy; designed to reduce gas and fussiness. Only 4 parts for quick and easy cleaning and simple assembly. A range of flow rates are available for your growing baby; Soft, durable silicone is odorless and flavorless; Dishwasher safe and can be sterilized with any Philips Avent steam sterilizer or by boiling. Trusted by millions of moms since 1984, Philips Avent is the #1 brand recommended by moms worldwide.