Sunny Health & Fitness SF-E902 Air Walk Trainer provides an aerobic workout, giving you all the benefits of stretching, walking, running, cross-country, skiing, and aerobic dancing without jarring impacts or damaging movements to your body. This space-saving Air Walker trainer folds to half the size, making it easy to put away in your closet or in a tight space. The striding motion delivers a slight twist to the midsection engaging both the upper and lower body. You’ll get a total body workout every time you workout!