The Stamina AeroPilates Pro XP557 is for the person who takes their home workout seriously. For Pilates Reformer exercises that strengthen and add flexibility and for cardio exercise that is as effective as a treadmill or elliptical trainer, the AeroPilates Pro XP557 has many added features to make your workout more effective and more comfortable. The aluminum rails and oak-finished wood construction have the look and function of a studio reformer. The padded carriage glides smoothly on the durable high-grade wheels and aluminum rails. The upholstered Bach stitched thickly padded carriage is comfortable and gives you room to rest your arms at your side while keeping your body in proper alignment. The rails are longer, about 10 inches longer than the folding AeroPilates Reformers. The Pro XP557 is elevated 15 inches to allow for more exercises and to make it easier to get on and off the Reformer. The foot bar is adjustable for more foot position options and is thicker for comfort and better footprint. Four springs, two low resistance springs marked with blue collars and two high resistance springs marked with yellow colors, give you the optimal resistance to build your strength, flexibility, range of motion and cardiovascular fitness. The pulley post elevates the ropes and lets you adjust the rope further apart or closer together. Adjusting rope length is quick and easy. Run the snap end of the rope through the loops on each side of the carriage and snap. Adjust the headdress to one of the three positions where it is comfortable for you. Oversized high density foam shoulder pads offer additional support and comfort. Double-loop hand/foot straps keep the rope secure to your feet and hands while you tone, strengthen and get flexible. For secure standing exercises that strengthen and tone the inner and outer thighs, there is a textured rubber grip. Only Stamina Aero Pilates Reformers add the benefit of cardiovascular fitness to traditional Pilates with the oversized patented cardio rebounder. Cardio rebounding is gentle to your joints. Switching from traditional Pilates to cardio rebounding is quick and easy. It's easy to change from the foot bar to the cardio rebounder. Then, just lie on the carriage and jump against the cardio rebounder. Adjust the springs. Heavier spring resistance makes your legs work harder. Less spring resistance will focus on your abs and core. Whether emphasizing your core or legs, you will shape and tone while you get your heart and lungs pumping. A recent study showed cardio rebounding raises and maintains your heart rate as effectively as running on a treadmill or elliptical trainer. You'll improve your cardiovascular fitness and burn calories. Get lean, get fit, get strong, get flexible with the Stamina AeroPilates Pro XP557.