Help develop your overall speed by improving your stride frequency and length with the Bullet Belt from Power Systems. This exercise equipment is ideal for football, soccer, and track athletes trying to improve their overall speed. This Bullet Belt listing includes the Pop Feature only. The Pop Feature allows the athlete using the product to pop free from the handle to a full sprint. The belt used with this product has a 54-inch circumference, fitting most any athlete. Order your running training equipment here.