Description: 【Fully for a Variety of Power Supplies】: The power cord is USB interface, for most 5V2A , most 5V2A charging head, most 5V2A car charger ( be more than 1.5A to drive the heating film, it is recommended to match). 【Convenient Zipper Opening Design】: Zipper opening design, removable wash liner and cloth cover (heating sheet should not be washed, cloth cover can be washed), cleaner and more sanitary. 【45 °C Constant Temperature】: When the weather is getting cold, the warm milk turns cold soon, the warming bag can preserve 45 °C circulating constant temperature heating for a long time,your cute baby can enjoy healthy warm milk. 【Widely Compatible 】: Adjustable bottle heater for different materials such as glass, stainless steel, etc. Premium PU insulation keeps the internal temperature heated up quickly, while the bottle will automatically enter thermostat mode when it reaches the temperature you set. 【Adjustable Size】: With an adjustable size that fits various types of bottles and easy to use USB chargers, this bottle warmer is an ideal choice for travel, , making it for busy parents. Specification: Material: PU Leather  Size: 30cmx11cm/11.81inchx4.33inch Package Includes: 1 USB Baby Bottle Warmer Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.