More than just a flip flop, the Oofos OOlala Thong Sandal features patented Oofoam technology, designed to cradle your arches and cushion sore joints after a workout. This shock-absorbent recovery sandal is so light it floats. Absorbs 37% more shock than other materials Reduces stress on sore feet, knees and lower back Cradles your arches Biomechanically designed footbed allows natural motion Soft, conforming toe post eliminates toe chafing Shower/beach-ready; moisture resistant; doesn't retain