Stage 2: For when your infant is ready to graduate from our 5 oz. Breastmilk Bottle to a larger 8 oz. bottle Great for Breastfed Babies: Baby instinctively connects to the bottle’s mom-like shape so there is no nipple confusion. The concave base is easy to hold and encourages self-feeding and the development of fine motor skills. Protects Vital Nutrients: Quick cooling reduces bacterial growth, quick and even warming prevents nutrient-damaging temperatures and hot spots so baby is fed safely and promptly. All-in-One Feeding Experience: Pump, store, warm, and feed all with one bottle for perfect breast milk storage. Anti Colic: Medium flow, vented nipple prevents colic and baby gas, great for breastfeeding babies ready for a larger bottle. Baby Safe & Non-Toxic: BPA, PVC, LEAD and PHTHALATE FREE. {THREE PACK BRAND NEW!}