One pack of Mason Bottle Nipples can do the work of a whole baby bottle system if you’ve already got jars at home, helping you save space, save money, and save the planet.

Benefits:
Wide breast-like design supports breastfeeding
Dual-valve ventilation system to prevent gas and colic
Milk flows smoothly with no air bubbles and no leaking
Fits any regular-mouth mason jar
100% Made in the USA