Medela Contact Nipple Shield with Storage BoxDescription Medelas Contact nipple shields make breastfeeding possible when latching on is difficult or painful by protecting sore nipples and helping your baby attach more easily. What is a nipple shield? A nipple shield is a thin, flexible piece of silicone that you place over your nipple before breastfeeding to protect it. There are holes in the tip so your milk can pass through to your baby. Some moms worry that having a barrier between themselves