There're electric blankets. Given we spend a lot of time out of bed they don't help in all coldness.
The Electric Jacket operates on a similar level, plug and heat, unplug when warm and ready to wear. To minimize weight, the heating device isn't integrated and should not heat above normal body temperature. There could also be electric trousers, mittens, socks etc.
Alternatively, there could be a heating station whereby you put your normal clothes on (like food warmer) and have your clothes warmed before you wear them.
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