I have to say, I was surprised by how well this works.  I wear a "C" width shoe which makes it hard to find an attractive shoe that fits since most ladies average width is "B".  The combination of the spray and stretching device converted 3 pairs of shoes overnight from tight to incredibly comfortable.  The wooden stretcher comes with oval metal devices you can place to spot stretch specific areas of your shoes for bone spurs, etc.  This even worked for a pair of ankle boots.