Meet the Humbgo XG jacket: a power heated jacket that gets you heat in a couple of seconds. It is windproof, waterproof, and stainproof. The jacket may be much thinner than a regular winter coat but provides you with adequate warmth on cold winter days.
Humbgo XG jackets can be used with any 5V USB power bank. You get removable hood, waterproof heat controls, built-in gloves, and other convenient features.