Portable. Small and easy to carry, making our life more convenient, and we don't need to worry about babies drinking milk. Feature. The baby drinks warm milk at any time, and keeps the temperature at a constant temperature (the USB needs to be connected to the power supply) USB. Can be connected to mobile power, charging head, car USB, so can be used as a baby bottle heater for travel, airplanes, trains and cars. Adjustable Range. 30 degree to 50 degree adjust, suitable for a variety of feeding bottles. Four Layer Material. firmly sticker lock,thicken PU first layer, high dense sponge layer, heating layer, comfortable lining. Size Chart: Size:120x60mm/4.72x2.36inch Package Includes: 1 Piece Baby 1 Piece USB Cable Note: 1. This is not infant toy , please take away from kids to avoid eating. 2. Please allow slightly error due to manual measurement. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 4. Wish you a wonderful online shopping!