Dr. Brown's 5 oz Options Wide-Neck Glass Bottle - 2 Pack

It is very suitable for newborns to prevent flatulence. It has an airway, and you'll find that there's no bubble in the pacifier when baby drink milk.
Some mothers think there is a promble which the milk will leak from bottle. I think because of correctly use. If you read the instructions, it says to mix well than assemble the pacifier. Don't shake the bottle to mix the powder. That will creates air and goes into the airway, causing a leak.
Finally, after you close the lid, you can try to
loosen the pacifier lid and tighten it again to prevent leak.