This USB baby bottle warmer portable bottle bag is a helpful and convenient tool for you to keep the milk or water warm, which is especially needed for babies. Features: Its light weight, portable, practical, convenient, durable Intelligent temperature thermostat baby milk bottle warmer or use it as warm pouch for stomach cramp, great travel essential. The thick hook and loop straps binds and secure various bottle size and shape (55cm - 75cm) diameter. Bright clear coloured LED indicator desire temperature selected, simply toggle the button for constant temperature setting, 40 degree(green), 50 degree(blue) or 60 degree(red). Intelligent thermostat is programmed to keep heat constant and stable. Supplied with a universal serial bus (USB) cable, convenient versatile power options. Connect to 5V USB Jack Power socket, USB Port in your vehicle, Mobile phone charger, power bank etc. Durable thick splash proof Oxford cloth material on the outside and smooth soft plush fleece on the inside insulating. Specifications: Material: Cloth Color: Camo Black Size(LxW): 30 x13.5cm Applicable bottle diameter range: 55-75mm Package contents: 1 x Bottle Thermal Warmer Bag 1 x USB Charging Cable