Dr. Brown's Natural Flow Options+ Anti-Colic Baby Bottles 4oz 120mL 3 Pack Dr. Brown's Natural Flow Options+ Anti-Colic Baby Bottles come in a convenient pack of three, each featuring a 4oz/120mL capacity. These narrow-neck bottles are clinically proven to reduce colic, spit-up, burping, and gas by using a specialized internal vent system that provides a vacuum-free feeding experience similar to breastfeeding. The BPA-free design includes Level 1 slow-flow silicone nipples, making them ideal for newborns. These pediatrician-recommended bottles can be used with or without the green vent system as baby's feeding develops. Each bottle is individually boxed and ready for use. #Unisex