Your favorite wear-everywhere sandal! The Kirra black arch support thong from Vionic combines a triangular thong leather upper with subtle metal rivets and buckle detail, plus a backstrap that adds stability and adjustability. Microfiber wrapped EVA footbed absorbs shock, reducing stress on feet, ankles and knees. Vionic Technology is biomechanically designed to hug your arches and support your feet in comfort. Vionic sandals' built-in arch is shown to be effective in helping to treat heel pain (plantar fasciitis).