Gajoin nipple shields provide protection for mom's sore nipples during breastfeeding. Gajoin size 2 nipple shields are designed for nipples up to 23 mm in diameter. Gajoin nipple shields have a very thin natural SkinSoft silicone surface which fits perfectly on mother's breast and allows for maximum skin contact between mom and baby during breastfeeding. The textured surface is especially gentle on baby's skin and allows air to flow between baby and the nipple shield. Nipple shields should always be used under the care of a lactation consultant or a medical professional that specializes in breastfeeding. Parenting is hard. We make stuff to make it easier. Gajoin knows that being a parent is not always easy, so we make products that are smart and simple to use. For over 40 years we've been obsessed with making innovative pacifiers, bottles, cups, teethers, and toothbrushes, providing babies with optimal care at all stages.