The first time someone hears “heated jacket,” they usually picture something bulky, wired, and vaguely dangerous. The real thing is simpler and a little boring, in a good way.
The short version
Thin carbon-fiber panels are sewn between the shell and the lining at the spots your body loses heat fastest: chest, back, and collar. Press the button on the chest, and a small current warms those panels the way a seat warmer heats a car seat. Most people feel it inside ten seconds and then spend the next month wondering how they owned normal coats for so long.
Three heat levels cycle with the same button. High is for the parking lot at 6 AM. Low is for the office where facilities management believes 61 degrees is a personality.
The power bank thing, said plainly
Here is the detail most listings bury in fine print: heated jackets do not carry their own built-in battery. They run off a USB power bank that sits in an inside pocket, the same kind that charges your phone. Any 5V/2A bank works.
We say this at the top of our product page instead of the bottom, because finding it out on delivery day is a bad surprise, and we would rather lose the occasional impatient click than earn that email. Our bundle includes a 10,000 mAh bank so the jacket works out of the box; the jacket-only option is there for people who already own a drawer full of banks.
Washing it
Pull the power bank out, unplug the connector, and the jacket goes in the machine like any other coat. The panels have no moving parts and do not care about water once nothing is plugged into them.
Sizing, honestly
Ours is sized to a chart measured in inches, listed on the product page. Measure a jacket you like and compare numbers instead of trusting a letter on a tag; that habit will serve you on every site, not just this one.