Hmmm, first of all, I didn't even realize they made them without the rubber/plastic part in the back. I thought that was what gave you the support? If I got one that didn't have that then perhaps that would stop my 'riding up' problem.
Second, this may sound lame but how exactly does the sizing work? Or is it just something I'll have to try on for fit?
The kidney belt I had on did have 2 velcro straps, one big fat one and one longer narrower one.
Thanks John, I'll probably take you up on that offer. :)
Thanks for all the information.