Do Not Last
I got these at the very end of December and barely a month in, the right slipper barely provides any heat at max heat.  It is barely perceptible amount of heat and rather annoying as the other slipper is warmer even on the lowest setting.  I was willing to overlook the clunky design and frequent accidental button presses as other pointed out, as well as the weird feeling of the battery, but for $80 I was hoping these would AT LEAST last through a full winter.
Rating: 1 stars