The MAM Start Colors of Nature Newborn Pacifier was developed by leading pediatric dentists and developmental psychologists to provide maximum comfort and style for newborn babies 0-6 months of age.* MAM silicone girl pacifier feature an innovative nipple designed to promote healthy oral development so you can soothe your baby with confidence. Our pacifiers for breastfed babies have a built-in air channel that naturally flattens and extends when sucked, mimicking a human nipple during breastfeeding. Plus, all of MAM's breastfeed pacifier nipples feature life-like, SkinSoft textured silicone and fits perfectly in baby's mouth at any angle. MAM nipples are easily accepted by babies of all ages, with 94% nipple acceptance among babies tested.** Babies simply love the ease and comfort of latching onto MAM nipples. Pacifiers kept in the closed box will remain clean for up to 48 hours: Fill pacifier self-sterilizing case with water and place in the case with the nipple facing down. Follow pacifier package instructions for microwave setting. Cool completely before use. *Developed with the International Children's Medical Research Society. ***Market research 2010-2020, tested with 1,572 babies