The nipple features an innovative petal design for natural latch on similar to the breast, making it easy for your baby to combine breast and bottle feeding. The bottle provides the ideal food amount for newborns and preemies. Designed with the First Flow nipple, it has a slower, more controlled flow rate. The soft, textured, wideshaped nipple more closely resembles the breast. For the easiest transition from Natural bottle to toddler cup the product has a smaller size bottle to help ensure the appropriate amount for baby’s smaller tummy. With slower flow nipple, it has a smaller hole size delivers a more controlled flow rate for slower drinking babies. The Natural First nipple is the ideal flow rate to start bottle feeding your baby. The bottle also has following features: A smaller hole delivers a more controlled flow rate that’s ideal for newborns and for breastfeeding babies. Innovative twin valve design reduces colic and discomfort by venting air into the bottle and not baby’s tummy. The wide breast shaped nipple promotes natural latch on similar to the breast, making it easy for your baby to combine breast and bottle feeding. Wide bottle neck makes filling and cleaning easy. Petals inside the nipple increase softness and flexibility without nipple collapse. Your baby will enjoy a more comfortable and contented feed. Due to the unique shape, the bottle is easy to hold and grip in any direction for maximum comfort, even for baby’s tiny hands. The new Philips AVENT Natural bottle is made of BPA free material (polypropylene).