Dr. Brown's Natural Flow Options+ Anti-colic Baby Bottle Your options have never been better with Dr. Brown's Natural Flow Options+ Baby Bottle. From nipple to base, the Options+ Bottle makes for a comfortable feeding experience for baby. It's Great to Have Options+ Our bottles work best with the vent system in place but it's great to have options when baby's feeding develops. Just remove the vent when you feel it's time – no need to introduce a different bottle. Our bottle nipples feature their own venting system that offers a feeding experience similar to most nipple-vented bottles.