Though glass bottles have been around for many years, only recently have they made a much bigger comeback. Most parents using glass bottles now are using ones made of tempered glass, which can be heated up and don’t easily break.
Some of the benefits of glass bottles include:
Environmentally friendly – a glass baby bottle can easily be recycled and the process is much more energy efficient than recycling a plastic bottle
More effective at preventing milk from oxidation, which can weaken breastmilk nutrients
Give more purity of taste
Stay looking like new for years to come, unlike plastic bottles which can get cloudy over time