Merrithew?, the global health and fitness company that brought you STOTT PILATES? now brings you the Cardio Tramp? Rebounder - SPX Easily transform any STOTT PILATES? Reformer into a unique Pilates cardiovascular machine This versatile tool provides a soft landing surface and allows for plyometric activity for extended periods of time, increasing workout potential for all exercisers - from post-rehab to elite athletes. Fits SPX? model Reformers. Color: Black. Gender: unisex. Age Group: adult.