Orthaheel is all that I wear.  I suffer from knee and fibular pain and these shoes are a godsend. Love the wide, roomy toe box. I purchased these in the denim specifically because I find the man-made materials used are too warm.(Dr. Andrew Weil has a line of shoes using the Orthaheel footbed but made in leather that are awesome!) The denim is much more breathable. If you have any kind of foot, leg, knee, hip or back pain you owe it to yourself to try an Orthaheel shoe or insole.

3/2016 update - I purchased a 2nd pair in pewter but am returning them. They are not pewter, they are bronze.  The picture is very inaccurate.
The original pair purchased in denim did not hold up well at all. I wore them solely as slippers and the soles were fine, but the upper fell apart quiclkly.  Honestly, I forgot that I had purchased the denim until I went to review the pewter.  It saddens me to see all the negative reviews re: the now VIONIC shoes, but I knew the quality would suffer when they began selling them on QVC and then changed the name.  In my internet search I've found that it is now pretty much impossible to find the Orthaheel technology in leather.