The Dr. Brown's Natural Flow Anti-Colic Options+ Narrow Baby Bottle Bundle includes both a gift set and a 4-pack of 8 oz bottles. The gift set contains 3 8oz bottles, 2 4oz bottles, 7 nipples with variable flow rates, 2 storage caps, 1 pacifier, and 1 travel cap to support feeding on-the-go. The 4-pack contains 8oz bottles with Level 1 slow flow nipples designed for newborns 0m+. Both bundle components feature Dr. Brown's patented internal vent system that is clinically proven to reduce colic by decreasing spit-up, burping and gas. This vacuum-free, anti-colic system provides a feeding experience closest to breastfeeding so babies can feed at their own pace. The vent system also helps preserve nutrients and aids digestion. The natural shape nipple encourages proper latching and eases transition between breast and bottle. As baby grows, the internal vent can be removed without introducing a new bottle. The narrow bottles are sustainable, BPA-free and dishwasher safe. By purchasing Dr. Brown's, you support their collaboration with Plastic Bank to prevent ocean plastic pollution. With options to support newborn through toddler feeding and accessories for storage and travel, this bundle offers a complete feeding system to nurture babies through every growth stage.