Happy feeding for every baby is possible with the Dr. Brown's Specialty Feeding System. The unique internal vent system along with the Infant Paced Feeding Valve help babies with conditions that may cause feeding difficulty, including cleft lip/palate, tongue tie, lip tie, oro-neuromotor dysfunctions, congenital heart disease, or craniofacial anomalies. The Infant Paced Feeding Valve creates a compression nipple that allows baby to feed by creating a compression nipple that assists them in self-regulation. Dishwasher (top rack) and sterilizer safe. BPA free. 0m+.