Base Layers 7.4v
Warmnsafe 7.4v Base Layers for on or off vehicle use
These low voltage base layers are designed specifically to enable people to use when away from a vehicle, the lower voltage means the power consumption is low and therefore means that batteries to operate them are much smaller, using batteries with 12v systems simply isn't viable as you'd have to lug a car battery around with you to get anywhere near a reasonable duration.
When you factor in that you won't be suffering the wind chill factors of high speed motorcycling then you can see there's no need for so many panels and higher power, they are however still reasonably good and taking the chill away when riding too, just not as hot and toasty as the 12v range.
The range includes Warm & Safe heated tops, glove liners, sock liners, batteries and controllers