Just a word of warning if you buy heated seat mats that plug into the car’s 12v socket, also buy some spare fuses.
The current draw when first plugged in can often blow the fuse protecting the 12v socket. Manufacturers no longer expect the sockets to be used for a conventional cigarette lighter and have often either multi-d other electric gizmos through the same fuse, or lowered the wattage rating of the fuse. Thus the heated mats can blow the fuse
It is a pain booking the car into a dealership for a 2 second fuse replacement, much easier to do it yourself or get a friend etc to do it as the socket is useless until the fuse is replaced.
My former Citroen was forever blowing the fuses when I got one of those heat mates from Lidl.
Mike