Orthaheel Women's Jenna Thong Sandals are designed with built-in orthotic support for heel pain relief Leading Australian podiatrist Phillip Vasyli invented Orthaheel to provide heel pain relief, while improving your body alignment, posture and walking gait. Just like the tires on a car, improper alignment of feet can cause wear and tear to other parts of the body… like the knees, hips and lower back. The ingenuity in this thong sandal is in the Tri-Planar Motion Control System footbed with contoured arch support and a deep heel cup, which helps reclaim your foot’s natural alignment, enabling feet, ankles and legs to function effectively as intended. Style takes flight on the synthetic upper with triple straps, a whimsical butterfly accent with laser cut-outs. Nylon webbing toe post feels soft between your toes.