The Dr Brown's Natural Flow feeding system is designed to benefit premature babies who have difficulty with sucking. This innovative bottle features a patented internal vent system that helps reduce colic, gas, and spit-up, ensuring a more comfortable feeding experience. With its 60ml capacity, it is perfect for small feedings. The Options+ design allows for easy transition between breast and bottle feeding. Key Ingredients include the Internal Vent System to reduce air intake, a Silicone Nipple that mimics natural breastfeeding, and a Wide Neck Design for easy cleaning. Benefits include a more comfortable feeding experience, reduced colic, gas, and spit-up, and support for a smooth transition between breast and bottle feeding. To use, clean the bottle and nipple thoroughly, fill with milk or formula, and attach the nipple securely. Suitable for premature feeding needs and concerns like colic and feeding difficulties. Additional Information: Cruelty-Free, Vegan, Paraben-Free, Sulfate-Free, Fragrance-Free.