Mam self sterilising anti colic bottles 160ml 3 pack with an innovative design allows babies to drink slowly and calmly due to the ventilation holes in the base which regulates the milk flow to reduce the amount of air swallowed during feeding mam self sterilising anti colic bottles 160ml 3 pack takes only 3 minutes to self sterilize in 3 easy stages easy switch between breast feeding and bottle mam self sterilising anti colic bottles 160ml 3 pack features very easy to clean