UPDATE: I initially blamed my problem with these boots on the new integrated heel cushion. Although this is still a horrible idea and removes the option for an insole of your liking, it wasn't necessarily my problem. I tried the Braddock steel toe and I experienced the same symptoms of discomfort. Braddock's destroy my feet and I'll stick to 6 inch Keen boots.

These have a rubber heel cushion that the footbed rests on. On any other keen boot that I know of, the heel cushion is part of the removable footbed. Not only does the odd feature of this boot make them incompatible with orthotic/aftermarket inserts, it makes them extremely uncomfortable for me. There's a lot of pressure on the center of the bottom of my heels, which also causes my big toes to go numb. I don't know what keen was thinking, but they ruined one of their 3 American built soft toe work boots.