【KEEPING MIKE WARM】 When the weather is getting cold, the warm milk turns cold soon, the warming bag can preserve heat for a long time,your cute baby can enjoy healthy warm milk. The bottle warm keeper can work well with plastic bottle and glass bottle. 【42 °C CONSTANT TEMPERATURE】 42 °C circulating constant temperature heating: efficient maintenance of nutritional milk, and you can drink milk while it is warming. 【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. 【USB INTERFACE】 The baby milk warm keeper can be used for portable power source, charging plug, car USB interface, portable and safe (Power Bank Not Included) 【PURCHASE WITH CONFIDENCE】We assure 100% customer satisfaction. If for any reason you aren’t happy with our product, we’ll provide a 30-day money back guarantee or a new one product. Purchase risk free today!