North American Health & Wellness Sitting Stepper,1 PackHelp Prevent Blood Clots Help reduce your risk of deep vein thrombosis (blood clots) with this compact Sitting Walker. With an almost effortless stepping motion, you can help increase circulation to your ankles and feet, reduce numbness and prevent swelling. Plastic. 10-1/2W, folds to 5-1/2W. P..