Dr. Brown's bottle features a two-piece internal vent system that works unlike any other bottle design. Dr. Brown's fully-vented design is closest to breastfeeding. The internal vent system and silicone nipple work together to provide a controlled flow so babies feed at their own pace.
Air enters the bottle collar and routes directly through the internal vent system.
The air channels through the vent tube, bypassing the breastmilk or formula, settling to the back of the bottle.
The vent prevents vacuum pressure, aeration of the breastmilk or formula, and nipple collapse.
Baby feeds comfortably while milk flows freely, similar to a breastfeeding experience.