Designed for the Lifefactory Glass Bottles, these replacement nipples come in three sizes plus an additional Y-cut. Made from non-toxic silicone, and they come in a set of two.
- (Stage 1) 0 - 3 months: Slowest flow
- (Stage 2) 3 - 6 months: Medium flow
- (Stage 3) 6 + months: Fast flow
- Y cut: Fastest flow available