Product DescriptionPlaytex Baby VentAire Bottles provide complete tummy comfort for easy switching between breast and bottle feeding. VentAire Bottles are designed with doctor-recommended features that help prevent colic and reflux. The patented bottom vent promotes an air-free feed, and the ergonomic, angled design promotes semi-upright feeding to help prevent ear infections. Unlike nipple vented bottles, VentAire\'s bottom vent keeps air at the back of the bottle and prevents it from mixing with milk as your baby drinks. Less air bubbles in your baby\'s milk means reduced colic, reflux, gas, burping and fussiness. Playtex Baby offers a variety of uniquely designed bottles that meet all of your babys changing feeding needs. All Playtex Baby products are BPA, PVC and Phthalate Free.Brand StoryBy PlaytexFrom the ManufacturerA clinical study confirms that babies using new Playtex VentAire Advanced bottles had less gas, spit-up, colic and other discomforts vs. Avent, Gerber and Evenflo reusable bottles. With the wider bottle, and a NaturalShape nipple shaped more like the breast, the VentAire Advanced wide bottle is designed for babies switching between breast and bottle OR transitioning from breast to bottle feeding. VentAire Advanced bottles are easy to clean and come with a leak-proof, breakproof guarantee. The bottles are compatible with our line of Nursing Necessities breast pumps. BPA Free, made by Playtex - A leader in Infant Feeding.