If you are on the higher side of the size range, I would recommend going up a size. 5-2 second" recovery time, but keep in mind, if you are using this latter setting, the sound is cranked up quite loud, while wearing BOTH ear plugs and the 100s, than you would be hearing without any ear protection at all. Just sizing issue (: I googled walking sandals and chose these. yawn same feminist nonsense that ruined star wars: women are awesome at everything, men are tag along empty suits. One of the wheels on my right skate was dragging. Me agradó mucho. I wrote to Intoval complaining of a possible defect. In addition the inner sole was not as pictured and advertised, which is the whole reason I chose to purchase these shoes. Im guessing people who gave these good reviews never used the Flyknit Freeruns.