Every feature of mams anti colic bottles is designed to make feeding time as easy as possible for baby and for parent from teat to base and from shape to materialsthe patented vented base of the mam anti colic bottle ensures that babies can drink calmly and relaxed the ventilation holes in the base regulate pressure balance and airflow and allow the milk to flow undisturbed without air bubblesmarket research and medical studies suggest that the innovative vented base reduces colic symptoms