I read plenty of glowing reviews but was still skeptical, i started researching other websites for reviews and could not find anything but people gushing over this thing. I finally decided to drop what seemed like an absurd amount of money on a piece of foam just to see if it was really that good. It is. It transformed my car. Nearly all small vibrations and bumps are absorbed into the foam and no longer felt. On the big gnarly bumps, it feels like somebody has hit me in the back with a large pillow instead of a a sledgehammer as it previously did. If you do any street driving on stiff suspension and a racing seat this thing lives up to its name as the backsaver. The only con is that i do sit slightly higher in the seat, but I had adjustment left to lower my seat and now I'm back to the position i prefer.
Bay area, CA