FR1 vs. FR2 Nipples

The FR-1 is our standard nipple that is on all of our bottles and is good for babies up to 12+ months. 

The FR-2 replacement nipple offered for breastfeeding babies used to a strong letdown or a more developed baby (12+months). 

Both nipples allow your baby to control the flow of the milk, the FR-2 nipple just has a larger hole so more milk flows out at once.