Portable bottle warmer / thermos bag for a bottle

Portable bottle warmer / thermal bag for a bottle. Works with a USB cable in the car or with a Powerbank. Allows you to take your favorite warm drink anywhere, maintains a temperature of 40C, 50C, or 60C. Universal size (closed with velcro). Bought new on Amazon, didn't get to use it as the child quickly started drinking from a cup. It comes with original packaging and instructions in English. The price is symbolic as we need to clear the cupboard.