This is a nipple for baby bottles from a breastfeeding consultation room. I used it a few times during the newborn period in December 2025. My baby had difficulty sucking and couldn't breastfeed well, so I bought this, but it didn't work well either, and I quickly switched to the Pigeon Peristaltic Nipple, so I didn't use it much. When shipping, I will fold the nipple. Please understand. Thank you for looking.