After making the 3rd version of my heated gloves I kind of regretted using a heavier glove, so around Christmas I made another pair that would fit inside my wool gloves. These ones are a bit different in that I can run both gloves off a single USB-C power bank using the 9V alternate voltage mode. I figured I should make another tutorial otherwise I'd forget how to make them the next time I need to make a pair.
https://www.instructables.com/Heated...B-C-Optimized/