DESC: The Inertia Runner X3.5 Treadmill is loaded with convenient features that make operation of your treadmill easy and convenient. Our value model offers the most recommended features along with solid performing mechanics. The 18" wide by 54" long running surface has a compact space saving design ideal for any home. The exclusive Shock-Deck reduces the jarring impact of walking and jogging and makes it easier on your joints. Convenient features include 1-Touch Keys, an Easy-Touch System, and programs for speed, incline, heart rate and body fat burn. The attractive design of this home treadmill is sure to make an impression in your home. Aluminum upright and side rails, contoured corners and great looking display add to this well built treadmill. Inertia Treadmills fold and unfold for easy and quick storage.