Brunswick went all out in designing their high-performance, interchangeable bowling shoes. Biomechanical contouring was used in the engineering of this shoe. Since the foot is asymmetrical and curved with a natural, angled flex zone this shoe was designed with that in mind. The biomechanical contour and innovative flex bars of the shoe combine with the natural movement of the foot to provide superior flexibility, comfort, and function. This design and so many other details, features, and extras make this shoe the shoe to have for all serious bowlers.