Cooled seats

They offer their own version. I have Katzkins in my F150.

If you opt for the heating and cooled option, you will not be able to use the factory button for heated seats (if you already have them). They provide a different button, typically located on the side of the seat.
Has anyone else done this upgrade? I just got mine back from the shop and it feels like there is a brick in the middle of the seat. Doesn't really feel like it works as well as the OEM either. My parents both have the factory heated and cooled seats on their trucks. I've borrowed them a few time and I run theirs on medium or low once things are cooled down. I've yet to take the Katzkin unit off of high. Cools your tailbone and that's about it.