We got them in the package that came with the Wife's Jetta. They are great when it is cold out and your butt hits that cold seat. First thing that goes on when we start the car. Heater won't be up for at least 5 min. But during that time, the heated seat keeps you warm. As for SF area, Even though you don't get down into the 20s, you still get down below 65. So heated seats even in SF would be nice to have on cold mornings.
