The bottle does not require the use of battery and makes it easy to transition from breast to bottle and the small bottles come with slow flow nipples and taller ones with medium nipples. (babygearspecialist.com)
However, legislation is a more aggressive tactic for slowing the flow of these plastics. (treehugger.com)
Born Free glass bottles come in two different sizes: 5 ounces (with slow flow nipple) and 9 ounces (with medium flow nipple). (babygearhub.net)