We bought the mason bottle nipple two pack because we were already swimming in mason jars at home from jams and jellies from grandma. It was such a simple genius idea to start the babies off reusing and recycling. The nipples don’t leak and the jars don’t break. The jars are easy to wash, and the nipples clean so easily. Recommending to all of my friends. - Amber F.
I have had them for almost a year and they work great! I love being able to store pumped milk in the small mason jars, use immediately in the same bottle, and if not needed they store well in the freezer and stack! We throw all the parts into the top rack dishwasher and everything cleans well. - A.R. (Amazon Customer)