Heated seats
 

Anyone tried to retrofit them? I didn't choosed them as they were related to alcantara seats, that I dislike (too delicate), but I'd like to warm my back...

I didn't retrofit but i have them in mine. Find myself almost never using them (when there might need for such i usually wear warm outwear anyway) thus not sure it's worth bothering time/cost wise to retrofit. What i'd like instead would be steering wheel heating, but unfortunately that is not an option.

I use my heated seats all the time and I’m not in a very cold area (it doesn’t snow here).

any stereo installer can do heat seats even in cars that never had them. I have one in my 04 WRX, its great. it can be pricey 2-300.