I love winter coz it comes with cute wolly hats, leather gloves and huge scarves. But still, I'm constantly freezing.
So provided I can hide its ugliness under a nice coat, I might have a go at the Berghaus Heatcell gilet , a kind of portable electric blanket with a heated panel to keep me toasty for up to three hours.

(Note to self: remember to remove the rechargable battery unit before washing it.)

Not so sure about the Conform'able Volcano Heated insoles, they have built-in elements attached to a power pack to carry in the pocket or hooked onto the boot. How "user-friendly" is that?