A very good purchase. At -15°C without gloves, it heated up in a few minutes just from the warmth of my hands, maintaining thermal comfort (without an additional heater). Very good quality craftsmanship. There are no visible production flaws. The pocket for the heater is large enough for all types of heaters, which, due to the product's quality, turned out to be unnecessary. At temperatures around 0°C, it is actually too warm—ventilation was necessary from time to time. I will definitely take it on all my winter hikes. Gloves do not offer such convenience when operating a camera/phone as this gadget does. Especially if you care about reaction time (e.g., when photographing wildlife). I recommend it.
