Philips Avent Natural 260ml Bottles feature a wide, breast-shaped nipple that promotes natural latch-on, prompting your baby to easily switch between breast and bottle. These Philips Avent Natural bottles come with an innovative twin valve anti-colic newborn-flow nipple that release air back into the bottle rather than into a baby's tummy during feeding, reducing colic and discomfort. Built-in petals in the nipple also make it softer and more flexible, preventing the shape of the nipple from collapsing in baby's mouth. Designed with both parents and babies in mind, these bottles have an ergonomic shape that is easy and comfortable for parents and little hands to hold.