The Philips Avent Natural Glass bottle is made of glass, commonly referred to as Pyrex. It has a high thermal shock resistance, so it can withstand sudden changes in temperature: you can sterilize the bottle and store it in the fridge. Please note that we do not advise to put the glass bottle in the freezer.
Additionally, to preserve optimal nutrition, it is recommended to heat food gradually and not place bottles with cold foods directly into hot water.
