Absorbs the impact of every step and snaps back to shape without noticeable compression. The result: optimal 'bounce' with reduction of heel shock and foot fatigue. Nothinz are thermally reactive, becoming softer with the warmth of the foot. The fully supportive ergonomic arch and full impact heel use much more material than other brands, resulting in thorough leg and back comfort. They can't absorb dirt, sweat or bacteria, so they will not smell, and they clean easily with soap and water. Comfortable strap, textured footbed, skid-resistant, extra-grip sole.