Delivering a twist on an iconic classic,The Evenflo Classic Polypropylene Bottles feature a unique, lightweight shape that is easy to hold, ensuring both you and baby are comfortable while feeding.These bottles are designed with Evenflo’s Micro Air Vents™ to help prevent nipple collapse and promote a more relaxed feeding experience.The silicone nipple shape has a gradual transition between nipple length and base to allow baby to maintainTheir latch. Designed with only 3 pieces,These Classic Baby Bottles can be easily assembled and disassembled for a quick, thorough cleaning between feedings. And becauseThere are only a few parts,There is nothing extra to worry about misplacing.The bottles are also dishwasher safe (top rack only), making your busy life a little easier.Want to pump directly into your Evenflo Classic Bottles?These baby bottles will fit most standard neck breast pumps so you can easily pump directly intoThe bottle for added convenience. And to help take the guesswork out of feeding your little one,The Classic bottles have molded measurement markers in both ounces and milliliters to provide an easy and accurate way to measureThe volume of liquids. All Evenflo bottles are 100% free of BPA, polycarbonates, PVC and phthalates, and are made of FDA approved food grade material.