- Brand: Medela - Material: Silicone - Size: M (20mm) Thank you for viewing. I used this until I was fully breastfeeding. I disinfect it at home, but I would like to trade with someone who is not opposed to disinfecting it again at home. The following is a quote from the official website: Medela's nipple care series, the Contact Nipple Shield. It can be used temporarily when nipples are painful or cracked, or when the baby cannot latch on properly. Made of thin, soft silicone, it is placed over the nipple before breastfeeding to protect it. There is a hole at the tip, so the baby can drink breast milk from there.