Excellent for lower backs
I've been using this for years.  It's very handy & does wonders for my lower back because I have a tendency to slouch in front of my desktop computer.  It's very portable.  I've taken it to bridge tournaments where I sit at a table for hours.  I bought it in August of 2009 & use it almost daily (sometimes I'm lazy & still slouch).  It's held up well.  Make sure you don't tighten the straps too much because it pulls on your knees (that's how it keeps you from slouching), which can get uncomfortable if you're doing this for hours at a time.<br /><br />One more thing.  When I bought it for $63.00, there was only one model.  I now see that there are several models (& possibly made by different companies).  This was the original one & I don't trust newer cheaper models.
Rating: 5 stars