OOfoam: 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 smell; Durable OOfoam holds its cushion; Machine washable; So light they float