The innovative heel system is made with EVA cushioning and TPR filled tubes inside the rubber. When the heel hits the ground, the shock is equally absorbed by the entire Kompressor System.

The energy is compressed uniformly into each tube for maximum comfort and efficiency.  At the end of the impact, the tubes regain their original shape and restore energy for a dynamic response.  The Kompressor System stays effective over time to guarantee consistent performance and is exclusive the Propulse line.