LatchAssist nipple everter is a simple tool to help nipples temporarily stand out so that it is easier for baby to establish a good latch, the first step to a successful breastfeeding experience. Gently draws out nipple for easier latch-on; Quick and easy to use with one hand while baby is positioned to latch on; Small and travel-friendly with protective case; LatchAssist nipple everter is a distinguished iParenting Media Award Winner; Two sizes (19mm and 24mm) are included in the pack; Lansinoh LatchAssist Nipple Everter FAQs What are the materials used to make the LatchAssist nipple everter? The LatchAssist nipple everter blub is silicone and the clear plastic flanges are made of BPA-free polypropylene. Can I share my LatchAssist nipple everter with a friend/colleague/family member after I am done with it? LatchAssist nipple everter is a single-user product and should not be shared with anyone else, because it may come into contact with your milk and there is not a way to completely sterilize it before passing it along to someone else. Can I use LatchAssist nipple everter to pump my milk? No, LatchAssist nipple everter is not designed to pump or capture breastmilk. Lansinoh recommends discarding any breastmilk that may have collected in the bulb and not to attempt to use it to feed your child.