This is a breastfeeding consultation room bottle that I've used for about three months. I was recommended this by the hospital, and it was very easy to use, allowing me to transition to exclusive breastfeeding. I also used the Pigeon Peristaltic PLUS nipples (SS size) for the Peristaltic PLUS bottles a few times, and I'm also selling those nipples. These are nipples for the Peristaltic PLUS bottles and cannot be used with the breastfeeding consultation room bottle. Both have been sterilized by boiling. I'm also including a new, unused Pigeon Peristaltic PLUS nipple brush.