The specially designed, patented Multi-layered, carbon fiber Blade has been specially designed to replicate the anatomy of the front forearms of a quadrupedal animal. As the user exerts pressure and force upon the apparatus, the Blade bends, flexes and contours with bio mechanically correct flexion and load response that enables the user to exert a downward force or weight load that flexes the carbon fiber blades. This directly translates into potential energy that is returned through propulsion. QuadruFit’s signature, contoured blade design allows for an incredibly efficient,  bio mechanically correct, return on potential energy response, or propulsion. The specially designed ‘S-Curve’ of QuadruFit’s propulsion system ie. ‘The Blades’ ensures that the user is reaching maximum potential energy when the user propels themself through QuadruFit’s signature movements and exercises.