The Philips Avent Nipple Protectors, which are made of ultra-fine, soft, odorless, and tasteless silicone, relieve sore or cracked nipples when nursing. With its butterfly design, the baby can still feel and smell the mother's skin, continue to stimulate the milk supply while nursing, and quickly return to the breast after the nipples have healed. This allows the infant to have more touch with the breast.