Dr. Brown's baby bottle offers various options with two feeding systems and a tested bottle. The latest bottles from Dr. Brown's allow parents to choose how they want to feed their baby. The innovative, patented ventilation system enables feeding with or without the system. Dr. Brown's options grow with your child's needs and provide a healthy benefit. Made from safe and sustainable materials, the bottle is BPA-free and contains no phthalates. The bottle, made from high-quality materials, preserves the natural vitamin content in food (A, C, E) and prevents the formation, retraction, and swelling of the child's nipple. It prevents the suction of urine and features a wide bottle neck as well as a soft natural silicone nipple.