The Dr. Brown's Natural Flow baby bottle is the only baby bottle that features a patented internal vent system. This vent eliminates the air bubbles and vacuum effect to allow positive-pressure feeding with no air – similar to breast-feeding.

The innovative design of the Dr. Brown's Natural Flow offers these advantages over other baby bottles:

- Reduces colic, spit-up, burping, and gas
- Prevents air bubbles from forming in milk or formula
- Helps reduce fluid in the ear
- Prevents nipple collapse

And all Dr. Brown's Natural Flow baby bottles include the following features:

- Easy to clean and top-rack dishwasher safe
- Connects directly to most breast pumps (Standard bottles only)
- Comes complete with a high-grade Level-One silicone nipple