I bought it!! I bought a Massage Cushion.
I got really fed up with all my back pain and I decided to give it a try. I tried to import it from Amazon.com but I couldn’t  because I’m in Europe, than I tried to buy it in England and again Portugal was not an authorized destination so I bought it in Portugal for almost the double of the price.
The model is almost the same of the Homedics QRM-400H Therapist Select Quad-Roller Massaging Cushion with Heat from Amazon.com. There aren’t many models …