This is my third pair of these wonderfully supportive flats and I hope they never stop making them just the way they are!  I was amazed with the first pair how much support there is because of the wide elastic strap, which holds the shoe to your arch and cradles it.  I had a total knee replacement two years ago and was having trouble finding a shoe that would be supportive, but flat.  This shoe is perfect for my needs and is cute as well.