"I have a joint problem in the lumbar and sacral areas. I can not sit still because it hurts. I need to sit on my buttocks as the video shows, I can not touch or touch the bone on either side, I only sleep lying on my side. I've done 3 surgeries to put and remove 2 interspinous retractors that were broken. I have not sat down for 3 years (I work and I eat all my mealsstanding ), I'm very tired of only just going to bed late and start the day early without have a position of relaxation. I need something like that. How can I get in touch to know more details? Carlos Araujo"