Advanced Anti Colic Feeding BottleDescription Advanced Anti Colic Feeding Bottle, Clear, (2 X 260mL) Features & details Designed to reduce colic symptoms for less wind and discomfort Heat sensing technology turns strip pink when babys feed is too hot Unique 3 piece anti colic tube draws air away from milk Star valve prevents milk travelling back up the tube, so no leaks and thats a promise Award winning breast like teat for natural latch and guaranteed acceptance Always BPA and