Groundies Kos Sandals

From the Groundies website: Our Kos is a modern and simple men's barefoot sandal, which definitely passes as a unisex model and can thus also be worn by women. The high-quality leather provides a simple and elegant look, the thin and flexible sole, on the other hand, lets you walk noticeably on the ground. Stable support is provided by the slingback strap as well as the wide strap over the foot.