Feature:1. Fire Protection Treatment: Sandwich type insulation design, heat insulation for heating with fire treatment, ensure safety. And made of polyester heating material, heating fast and uniform.2. Zip Closure: Made of knitted fabric and heating sheet, liner and cloth cover can be disassemble and washed, but heating sheet can not wash, more clean and sanitary.3. Multiple Charging Modes: With USB Charging port, compatible with power bank, laptop, most 5V2A mobile power supply, most 5V2A charger plug, most 5V2A car charger.4. Portable And Compact: Convenient for use when outside. Can stretch to fit most baby bottles and is long time insulation, not easy to cool, simple and safe to use.5. Wide Application: Can warm baby bottle, can also use for warming water bottle. Wonderful as a gift for friends, lovers, parents in any scenes, including birthday, Christmas, Halloween.Specification:Item Type: Travel Milk Heat BagMaterial: Knitted fabric, heating sheetSize: Approx. 13.6 x 28.5cm / 5.4 x 11.2in.Package List:1 x Travel Milk Heat Bag