The Comfort Fit Nipple Shield from Morisons Baby Dreams is a nipple shaped sheath worn over the aureola and nipple during breastfeeding. These are made of silicone, which is smooth, light, and flexible. During breast feeding, use this nipple protector if your nipples are flat or cracked. The unusual anatomical shape allows for the most skin to skin contact between mother and infant. It contains no BPA and is absolutely healthy for infants. When the shields are not in operation, they are stored in a hygiene case.