I used to have really bad sciatica. I got a cheap on at Big 5 sports. I used it for about 5 minutes a day for a month or so and no more sciatica. That was about 9 years ago and I am starting to get some lower back pain again. I may get another one.

"Socialism produces bad music, bad art, social stagnation and really unhappy people", “I am a conservative, and you may not like that, but I am.” Frank Zappa 1986