Whether performing aerobic or plyometric exercise, the STOTT PILATES Jumpboard accessory for your SPX Reformer provides a padded jumping surface that promotes biomechanically sound foot placement, mimicking the hard surface of the floor. Expand your repertoire and train your core and lower or upper body by combining this accessory with the spring resistance of your Reformer. Its also a great alternative for footwork if you experience discomfort using the Reformers footbar.