Avent Natural Glass Baby Infant Bottle Newborn Starter Set Bottles Feeding New is the most natural way to start bottle feeding. The five BPA-free Natural bottles included in this kit feature wide breast-shaped nipples with unique comfort petals promoting natural latch on and making it easy to combine breast and bottle feeding. The bottles also have an advanced anti-colic system with innovative colic-reducing twin-valve design for less air in baby's tummy and a more comfortable feeding experience. The set includes two Natural nine-ounce bottles with two Natural slow flow nipples, three Natural four-ounce bottles with three Natural newborn nipples, Formula Dispenser, Bottle Brush and Soothie Pacifier (0-3m). The Formula Dispenser holds three pre-measured portions of milk powder and is ideal for travel. The Bottle Brush's curved brush head and molded tip cleans hard to reach areas.