In the first wearing these (thin wooden) insoles crinkled at the edges near the balls of my feet, causing a real irritation, making them literally unwearable. Plus, they did not do that much for odor control!  Fortunately, since then I found another product -- Dr. Scholls Odor-X insoles -- that are comfortable and they have worked incredibly well to neutralize the odor in a previously stinky pair of boat shoes!