[Keeping Milk Warm] The warming bag can preserve heat for a long time,your cute baby can enjoy healthy warm milk. [Three AdjustableTemperature] Three AdjustableTemperature heating: efficient maintenance of nutritional milk, and you can drink milk while it is warming. [Safty Heat Insulation Design] The sandwich type structure heat insulation design, heat preservation and heating core core fire treatment, safety guarantee. It can keep the milk warm for a long time. [Convenient Zipper Opening Design]:Zipper opening design, is easy to take the bottle out and make the milk warmer bag sealed enough. [USB Charge]: Portable milk warmer for baby Come with 68cm USB cable, just connect the cable into any power bank, vehicle USB or laptop interface. The additional pocket of our bottle warmer can place a power bank, help you warm the milk anywhere. Note: Please use 5V/2-3.1A output USB to heat ,5v/1A output can't heat