The following nipples are available as replacements to the Level-One nipples that come on every Dr. Brown's Natural Flow baby bottle. These nipples are for use with the STANDARD Dr. Brown's Bottles.
Preemie - for feeding preemie babies
Level-One - for feeding newborns 0+ month
Level-Two - for feeding babies 3+ months
Level-Three - for feeding babies 6+ months
Level-Four - for feeding babies 9+ months
Y-Cut/Cereal - faster flow for thicker liquids, 9+ months
Two nipples per package.