MAM Easy Start Anti-Colic Valves is a pack of two replacement valves for all MAM Anti-Colic bottles. The innovative MAM Anti-Colic valve regulates the drinking flow and ensures babies can drink calmly and relaxed without air swallowing. Featuring 3 links that makes inserting, centering and removing the valve easy. 80% less colic*: The innovative valve helps to minimise colic by reducing air swallowing. 3 Links: Make inserting, centering and removing the valve easy. Easy to clean and change Fits all MAM Anti Colic bottles. Allows easy cleaning of valve. Includes 2 Anti-Colic Valves All MAM products are made from materials free of BPA and BPS ** Medical study 2011/Market research 2010, tested with 204 mothers. Compatible with MAM Easy Start Anti-Colic Milk Bottle Recommended for 0M+