Give new parents a little peace of mind with this Options starter set from Dr. Brown's that includes two glass bottle sizes and two different nipple types for age-appropriate flow rates. The bottles can be used with or without the included vent system that helps reduce feeding problems, helps digestion and helps preserve milk nutrients. Also included is a PreVent pacifier that helps lower the pressures inside baby's mouth, as well as naturally cleaning wipes that are easy to use and perfect for on the go.