1USB Charging: The bottle warmer comes with a USB cable. Just connect the cable to any power bank, such as a car USB or a laptop port. Help you heat milk anytime, anywhere. 2Good Insulation: This milk heater bag can keep food and drinks warm for a long time. It can also avoid hot water cups burning hands, which is also convenient to clean. 3Durabe and Safe: The milk bottle warming bag is made of durable materials, which is odorless and friendly to your baby. It has the good wrinkle resistance and shape-retention, and higher strength and resilience. 4Temperature Control: Intelligent multi-gear temperature control, which can be adjusted according to seasonal temperature. It is suitable for a variety of milk bottles. It keeps warm when it is installed, and it is suitable for all kinds of milk bottles. 5Soft and Portable: Using soft silicone, it is not easy to fall off, and can be applied to a variety of materials, such as water cups, mineral water bottles, milk boxes, etc. You can hang in a stroller or a crib. Specifications: Material: Polyester Size: about 27.5*12.5cm/10.83*4.92in (expanded) Voltage: 5v Power: 10w Power Interface: USB Product List: Baby Bottle Thermal Bag*1 USB Power Cable*1 Notes: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is tolerance in the product size.