Upgrade to the B-Spike fitness shoe from Springboost and upgrade your athletic performance. This highly functional shoe has a fabric and leather upper, a padded collar and tongue, full lace up closure, and a non-marking textured sole. The DorsiFlexion construction improves balance and provides optimum comfort so you can concentrate on your game while the energy plate optimizes your energy use and the roll of the foot. The B-Spike includes three interchangeable insoles corresponding to the three separate degrees of Dorsiflexion.