I used the colored wide rubber bands and stretched my arches up and down and then had the grandkids pull the bands to the right and to the left. You can get instructions to do a whole body workout with those bands. I used to tie them to a fence at the pool in Florida and stretch while strangers stared at me, but it is a rather easy exercise and no big equipment. They are commonly used to strengthen the arms in the gym. The different colors indicate the strength of the rubber. I broke the ones in the nursing home because they were old and I was stronger than the therapist thought. I was supposed to be having therapy on my knee replacement. I left the place after ten days. About the leather soles. I may have misled you. I got better healing with leather soles before I bought Finn shoes which have hard foam soles. It is the soft foam shoes which do not give great support. I wore them in Europe thinking they would be best and the cobblestones hurt my feet so much I couldn't walk some mornings. I soaked in Epsom salt water and we used the waste basket for a pan. The hardest part was purchasing the Epsom salt when we didn't speak the language. I demonstrated my need and my hurting feet. The clerk understood.
I never buy shoes without an expert checking the fit as different styles fit differently. It helps to have straps and buckles to adjust. Every little bit helps.
Dorisena