Bottles for breastfeeding consultation, set of 4 One new nipple, size SS Three bottles were purchased new and used for about 1.5 months. One bottle is secondhand, with an unknown usage period (I kept it as a spare, but my child didn't use it). Initially, my baby refused breast milk, and I was recommended to use these bottles. I am selling them because I transitioned to exclusive breastfeeding after about a month. They have been sterilized, but please sterilize them again at home before use. I will include the nipples (size SS) if you want them. There are 6 more, separate from the new one. If you don't want them, I will dispose of them.