The Hotronic Footwarmer PP E4 unit is the highest end heater offered by Hotronic. It has a paper thin heating element that goes underneath the toes and the ball of the feet to keep them warm. The heat will last for about 4 hours on the highest setting and 14 hours on the lowest setting. The Hotronic ski boot heater works extremely well and it is very reliable. Some people think boot heaters are wimpy, but there’s nothing wimpy about having better balance and getting in a few more runs than your buddies.
Please note this Hotronic ski boot heater needs to be installed into the boots. It can be done for free at any of our stores, or at home with a few basic tools.