Excellent like new condition. Sandals are designed to keep you grounded via Grounded Conductive Laces™. When worn on bare earth, Earth Runners give you an effective connection with the ground, through a copper lace plug on the outsole. Electron transfer between your body and the earth is facilitated through the stainless-steel lined lace circuit. This process grounds the body via intimate connection of lace and foot–similar to that of being barefoot.  Laces feature two parallel stitches of conductive thread up the entire length and are secured to the bottom of the sandal with a copper plug to keep you grounded. Laces are extremely adjustable allowing you to independently alter the thong, heel and ankle strap to accommodate your unique fit preferences. After your laces are properly adjusted, putting on your sandals is simple as slipping the heel strap on and off!