Runners often struggle with stress on the knees, hips and lower back. The Royal Double Station Sky Walker lets you experience a low-impact workout with benefits comparable to those of running without the disadvantages and jarring motion of jogging. This machine is ideal fitness equipment for two users, ages 12 and up, to get in an aerobic workout outdoors while defining and toning muscles in the thighs and calves. Enjoy the fresh air and use simple stride motions to help build stamina and burn calories in a short period of time. The durable steel structure can withstand weather and corrosion to keep users exercising all year long. Just place feet on foot pads, grab the handles and begin moving in a walking or running motion with a smooth and even stride. Maintain a steady pace and monitor heart rate to get the best cardiovascular benefits of this machine.  Easy-to-read instructions can be found on both sides to help users fully activate muscles and get the most out of their movement.