Selecting a Therm-ic battery boot heater.

First, select a Powerpack heat system!
A Powerpack is simply the batteries that power the heat. You have 4 battery options.

#1- Powerpack alone- (left column) If you have a pre-installed heating elements in your boots, (you'll know this by the wires coming out the top of your boots) all you need is a Powerpack.
#2- Powerpack with TrimFit- (second column) If you do not have pre-installed heating elements and have custom insoles or very close fitting boots, this is the best way to heat your boots.
#3- Powerpack with Classic insoles- (third column) This is our most popular system! If you do not have pre-installed heating elements or custom insoles, this is the easiest system to install! The Classic insoles have the heating elements preinstalled at the toes. All you do is trim to size and install.
#4- Powerpack with Perform insoles- (the right column) If you do not have pre-installed heating elements or custom insoles, this is easy to install and the Perfom insoles offer extra support for comfort. The heating elements are preinstalled in the insoles at the toes.

Next, select a Powerpack battery system.
You have 5 battery options.

First row- Basix+ - Uses AA batteries which allows this Powerpack to be used anywhere in the world.
Second row- Max+ -Uses rechargeable 1600 nickel metal hydride batteries. Includes a charger for use in the North America only.
Third row- SuperMax+ - Uses rechargeable 1900 nickel metal hydride batteries. Includes a global charger for use in the USA or Europe.
Fourth row- Liion- Uses small light weight rechargeable Lithium-ion batteries. Includes a global charger for use in the USA or Europe.
Fifth row- Liion with remote- Uses small light weight rechargeable Lithium-ion batteries that operates by a remote control. Includes a global charger for use in the USA and Europe.