I bought a bottle warmer before the baby was born, which is especially useful! If the child can't drink it all at once, or in order to save the milk frothing process at night, the milk will be frothed in advance and placed in the milk warmer to keep the temperature for a long time! Wake up at night and just take a bottle to feed it. That temperature is just right. For example, when I drink Obexin organic milk powder, I will wake up two or three times at night, and then once. Now I am more than one year old and basically wake up at night. Using a bottle warmer to keep the bottle warm at night will save us a lot of work for parents!