0+ Months - 1/4 Extra slow flow 0+ Months - 1/4 Slow flow 2+ Months - 2/4 Medium flow 4+ Months - 3/4 Fast flow 6+ Months - 4/4 Ideal for thick liquids Just a recommendation. May vary depending on your baby's drinking patterns. The MAM Principle Parents are demanding. At MAM, we are too. That's why, for over 45 years, we have worked with medical research & technological experts to develop products that are unique in function and design. MAM products support the individual development of every child and make everyday life easier for parents.