Archie,
You've revived a thread that is a year old. Try sending a private message to Mr. Spine. If you don't hear back in a few days, contact me and I'll see if I can reach him.
I don't have any experience with these belts. I have several very sophisticated back braces and have tried many different types. Everyone should understand that this is not just a compression belt. It actually has inflatable chambers that allow the brace increase in height after it is tightened. The theory is that it actually relieves pressure on the lumbar spine because it transfers some of your weight from your spine, to the brace and your hips.. reducing the axial load.
Here is a link to the
manufacturer's website.
If anyone tries these... please post!
All the best,
Mark