Created by a physician, dr. Brown's natural flow baby bottles feature a patented internal vent system that helps reduce colic, spit-up, burping and gas. The positive pressure design allows babies to feed comfortably, because the vent system eliminates the air bubbles and vacuum. All parts are dishwasher safe. Two replacement silicone nipples, exclusively for dr. Brown's natural flow standard baby bottles. Level three nipples are ideal for babies 6 months.

• Medium-fast flow nipple works with internal vent system for paced feeding
• Each Level 3 Nipple has same consistent flow rate, so both you and baby know what to expect
• Made of super-soft, high-grade silicone, fits all Dr. Brown's Narrow bottles