Here's what those Keens look like on my feet. The bump thing has a place to edge out. I think with the Sidis, there is a slight upward curve on the footbed there. It matches the contor of the bottom of the shoe. Take out the blue liner insole and feel it with your hand. That hard curve up spot hurts my bump. I have a whole blab about socks hurting me on TE. NOW I know it was not so much the sock brands. It was more than likely my neuroma pain. If the bump keeps hurting with better shoes, the pod doc said he will xray it next. He said it flexes good though.