Very comfortable shoes until you hear that creepy clicking sound from the sole of one of your shoes with every step you take. The wave springs that make this shoe so comfortable to walk on are made of steel that breaks after 2-4 months of walking, making the shoe ready to be thrown away. I'm wearing my fourth pair of Spira shoes. 2 pairs of Classic Leather hiking boots had the same problem with one of the springs. Also a few wave walkers. The Stingers are still holding up, maybe because I only use them occasionally.