Portable: The Bottle warmer is compact in size and light in weight, making it easy to store and carry. It is suitable for travel, camping, picnics and home use. Adjustable: Breast milk warmer, the temperature can be adjusted from 38 to 50 degree, and 5 level adjustable, can fit a variety of milk bottles, making it convenient and practical. Heating and Insulation: Bottle heater bag, four layer insulation structure, composed of PU leather layer, sponge, insulation aluminum film layer, heating film layer, and dustproof cloth layer. USB Charging: The food heater can be connected to adapters, portable power supplies and other devices with USB ports, making it easy to carry and use. Material: The baby bottle warmer is made of PU leather, which is waterproof , easy to clean and durable. Size Chart: 11.2cmx7.5cm/4.41inchx2.95inch Package Includes: 1Milk Bottle Warmer with cable 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.