Reidar Heat Vest is developed for the coldest days in nature, where extra warmth is needed. The vest is equipped with three electric heating panels, strategically placed to spread the heat efficiently throughout the body using blood circulation. With a button on the chest, the vest can be set to three different heat levels according to the desired intensity. The vest is ideal in combination with Reidar Powerbank - Nitecore NB10000 and has a duration of up to 17 hours at level 1. It is connected via USB. Note that the power bank/battery is sold separately