I live in SE Texas so there are not a lot of days when more than long johns, gloves and a jacket are needed. But, for those days when I want more; I simply put a couple of air activated warmer packs in the inner pockets of my jacket over my chest. I buy them at sporting goods stores and Wally World even carries them in the camping/hunting section. They are about $1 per pack and they last 7 to 8 hours. This is an option for people that don't want or need the electric clothing. For those of you up in the frigid north, I don't know how well they would work but it's better than nothing.
'09 Versys in Cool Lime ~ '06 Harley Roadking
'95 Suzuki DR350S ~ '94 Suzuki DR350S
'09 Kawi STX15F jet ski ~ '07 Kawi STX12F Jetski
'09 Yamaha Superjet ~ '13 Ram 4X4 3500 Cummins
'09 BMW 535i ~ '10 Kubota B3300SU