The light commercial t8 Treadmill and the iFIT Train Membership boast technology that puts results within your exerciser's reach. iFIT tracks performance and automatically adjusts the 12% incline to -3% decline range, and 0-12 MPH so every workout can be hands-free and personalized. The RunFlex™ cushioned deck mimics outdoor hiking, walking, running, and jogging, offering a unique indoor cardio experience.