Product Details Have More Comfort With Your Little One With The Lansinoh Latch Assist Nipple Everter. It Is Designed To Help Prevent Flatness From Breast Engorgement In The Early Days Of Breastfeeding. The Lansinoh Nipple Everter Gently Draws It Out, Making It Easier For Baby To Latch On. Plus, It Is Made Without Bpa And Bps And Is The First Step To A Successful Experience. This Feeding Nipple Shield Comes With An Insert That Has Detailed Instructions. There Are Two Different Sizes For A Correct Fit. Lansinoh Latch Assist Nipple Everter: Winner Of The Iparenting Media Award Lansinoh Nipple Everter Is Bpa-Free Helps Baby Latch On And Draws Out Flat Nipples Feeding Nipple Shield Is Easy To Use Contains 2 Sizes To Ensure A Proper Fit Includes Instructions That Are Easy To Follow