Evenflo Feeding’s classic and iconic shape now has a fun twist! The Evenflo Vented Plus Plastic Bottles feature Evenflo’s patented Proflo™ Venting Technology to ensure milk bubbles stay in the bottle and not in your baby’s tummy. This integrated 1-piece venting system helps significantly reduce the potential for colic reflux gas and fussiness keeping your baby comfortable even after they are finished eating. The unique twist shape makes these bottles incredibly easy to hold while feeding ensuring both you and your little one are comfortable. Designed with only 3 pieces the Vented Plus Baby Bottles can be easily assembled and disassembled for a quick thorough cleaning between feedings. And because there are only a few parts there is nothing extra to worry about misplacing. They are also dishwasher safe (top rack only) making your life even easier. ANTI-GAS – Proflo™ Venting helps prevent colic gas and fussiness EASY TO HOLD - unique shape is easy to hold for added comfort while feeding EASY TO CLEAN – 1-piece venting system means there are no extra parts to clean or lose PUMP DIRECTLY INTO YOUR BABY BOTTLES - bottles will fit most standard neck breast pumps Want to pump directly into your Evenflo Vented Plus Bottles? These baby bottles will fit most standard neck breast pumps so you can easily pump directly into the bottle for added convenience. And to help take the guesswork out of feeding your little one the Vented Plus Polypropylene Bottles have molded measurement markers in both ounces and milliliters to provide an easy and accurate way to measure the volume of liquids. All Evenflo bottles are 100% free of BPA polycarbonates PVC and phthalates and are also made of FDA approved food grade material.