MAM Anti-colic valve 2 valves The anti-colic valve patented by Mam regulates the flow of milk and ensures a relaxed and problem-free feeding, without swallowing air. Colic is reduced in 80% of cases Innovation: The patented anti-colic valve helps reduce colic by limiting air entry. Easy to clean and replace, it fits all Mam anti-colic bottles. Pack of 2 valves