Abstract: A sandal having an active, self-adjusting harness and method therefore typically used in the out-of-doors for rigorous activities includes rubber and synthetic materials and exhibits a lightweight robust, high-strength, flexible construction including an elongated sole for supporting a foot where the sole has a toe end and a heel end. A center toe strap is anchored in the toe end and includes a distal end fixedly connected to a front buckle. A rear strap is anchored in the heel end and has a first end and a second end extending above the sole. The first end and the second end of the rear strap are respectively connected to an inside rear buckle and an outside rear buckle. A self-adjusting harness comprised of a single strap is anchored in the toe end. The single strap includes an inside end and an outside end each extending above the sole.