Nipple puller helps to draw out inverted nipples making it easier for baby to latch on. It gently draws out inverted or flat nipples making it easier for baby s mouth to create contact and suckle on. Made with 100 percent soft silicone, it works without causing any pain. Nipples may stay protruding for up to a couple of hours. You may need to use the puller every time before feeding the baby.