The New Philips AVENT 9 ounce Natural bottle is the most natural way to bottle feed‎.‎ The wide‎,‎ breast shaped nipple promotes natural latch on so you can easily combine breast and bottle feeding and the unique comfort petals provides an extra soft‎,‎ flexible nipple without nipple collapse‎.‎ In addition‎,‎ the anti‎-colic slow‎-flow nipple helps newborns feed comfortably and easily and the ergonomic shape makes it comfortable for parents to hold and easy for small fingers to grasp‎.‎ Assembly is simple with only a few parts and the wide bottle neck makes filling and cleaning easy‎.‎ This AVENT Natural bottle is made from polypropylene‎,‎ a BPA‎-Free material and works with all nipples‎,‎ rings‎,‎ and caps from the Natural line ‎.‎