Newborn Starter Set: 2x 150ml and 2x 260ml Advanced Anti-Colic baby bottles, 2x medium flow Advanced Anti-Colic teats, 1x bottle & teat brush, 1x 0-6m Anytime soother. Proven to reduce colic*: 80 Percent of mums who tested agreed the Tommee Tippee Anti Colic bottle had successfully reduced their babys colic symptoms. Breast like: Award-winning breast-like teat for natural latch and guaranteed acceptance** Anti-colic: Tommee Tippee anti colic baby bottles have an Anti-colic tube that draws air away from milk to reduce colic symptoms for less wind, less reflux and less discomfort. Heat sensing technology and no leaks: Heat sensing technology turns tube pink when baby's feed is too hot. The star valve prevents milk travelling back up the tube, so no leaks.