Sunny Health & Fitness Strider Foldable Treadmill, 20-Inch Wide Running Belt with Optional Exclusive SunnyFit™ App and… $460.93 Make sure this fits by entering your model number. WIDE RUNNING DECK: Extra wide 20 inch running surface supports your stride and keeps you low to the ground giving you a real running experience without the dangers of running outside. Supports speeds of 0. 6 – 9 MPH. DEVICE HOLDER: Convenient tablet holder (4. 5L X 10H inches) securely holds most tablets, iPads or mobile devices while you exercise. Measure your device to ensure an accurate fit. Collapsible design.