The Most Natural Stride Patented Rollmentum™ center-drive replicates the body’s natural motion. Lowest Step Up Height Integrated rear step provides for lowest step up height of any elliptical. The Most Comfortable Feel Orthopedic “gel” footpads provide optimal comfort and relieve foot fatigue. Metabolic Equivalent Speed and Distance An advanced algorithm calculates your equivalent speed and distance based on your effort level and pedal speed. Adjustable Stride Stride adjusts between 17 and 23 inches. High-Tech Entertainment Center Integrated fan, water bottle holders, and iPod® or MP3 connectivity to play your favorite music on the built-in stereo speakers. The Ultimate in Flexibility Integrated side frame foot rests with non-skid surface allows for isolated upper body workouts. Lifetime Residential Warranty Incorporates all technology and commercial grade components from our “Club Series” which are placed in the harshest commercial environments throughout the world.