1PREMIUM MATERIALS: Portable bottle warmer is made of faux leather, hardware, silicone material, no irritating odor, even heat preservation, comfortable touch, can be used without worry. 2ADJUSTABLE TEMPERATURE: The bottle warmer bag has intelligent 21 gears temperature (4060) adjustment, precise temperature control, can be adjusted to the right temperature at will. 3LARGE CAPACITY BATTERY: This bottle warmer bag has 6400mAh large capacity battery, endurance of 38 hours, the higher the temperature, the greater the power consumption, fully charged in about 2 hours, can not be used when charging. 4LIGHTWEIGHT AND PORTABLE: Milk warmer bag is small in size and light in weight, easy to carry. Whether you are breastfeeding at night or going out, it can reduce mom's stress. 5WIDE APPLICATION: Suitable for most bottles, can hold soy milk, drinks, coffee, water, milk, so you can have a hot drink anytime, anywhere when you are hiking, shopping, traveling. 6GIFT OPTION: Travel bottle warmer can be used as a gift to share with friends, coworkers, relatives, family members who have newborns, so that your newborn can drink milk at the right temperature.