I don't know if my issue is due to a defective shoe, or bad design - There is a cleft or seam or something under the foot bed of each shoe, that results in a ridge running from one side to the other, directly under the ball of my foot. It makes the shoe impossible to wear.

OTHERWISE I was impressed with the flexibility of the shoe, even for being new. Toe cap didn't detract too much from the usual roominess of the Keen toe box. Looked like it would be a good warm-weather safety shoe.