Dr. Brown's Natural Flow Newborn Gift Set is designed to reduce colic, spit-up, burping, and gas in newborns. The set includes three 8 oz/250 ml bottles, two 4 oz/120 ml bottles, two Level 2 nipples, two storage caps, and three cleaning brushes. The bottles feature an internal vent system that helps preserve vitamins C, A, and E plus lipids, ensuring a comfortable and peaceful feeding experience for your baby. The bottles are BPA-free and fit most breast pumps, making them a versatile and safe choice for feeding your newborn.