I absolutely love these sandals!  I have horribly painful feet when I wear tennis shoes or flat flip flop if I wear them over 15 minutes - in the ball of my foot and the heal of both feet.  These sandals do not cause any pain even when I wear them walking around for hours!  They are very comfortable and feel springy when you step.  The straps are adjustable.  The only shoes I can wear now that cause me no pain.  I'm so glad I found these!