Sassy Natural-Flow Baby Bottles
Parents hoping to reduce Baby's chances of developing gas and colic may prefer natural-flow bottles. These feeders contain a two-piece vent system that reduces air when a baby sucks the nipple. Available in glass or plastic, natural-flow bottles, such as those by Dr. Brown's, are often more expensive and trickier to clean than standard bottles are. But fans swear they're worth the extra work.