The non-folding base of the XT685 promotes extra stability for runners. It also features the largest 56 x 152 cm workout surface in the series, and the 3.5hp motor make this treadmill on par with light commercial models. The Calorie program effectively trains your endurance - due to the high specs accompanied by this model. Features: Joint-friendly Cushioning System: Comfort is granted through our spacious running surface design, ensuring tall runners can enjoy their workout just as much. And, with six cushions distributed equally throughout every one of our treadmills, your joints and entire body will get the impact absorption needed to keep you running strong and long. Stamped Steel Motor Mount: At Spirit Fitness, we spend our money on quality, such as cast motor mounts. Why cast? We do not believe that a stamped steel motor mount will give the motor the secure mount that is required for a high quality treadmill. If the motor shifts, then the drive belt will loosen, which will make t