The NordicTrack T Series 9 Treadmill and iFIT Pro Membership boast technology that puts results within anyone's reach. iFIT tracks your performance and automatically adjusts the treadmill's 0-12% incline range, and 0-12 Mph so every workout can be hands-free and personalized to you. The SelectFlex cushioned deck allows you to adjust the cushioning between soft and firm to meet your preferences. Easily fold and roll it away to maximize your room's space. iFIT is the world's largest outdoor workout library, featuring over 10,000 workouts led by professional athletes and trainers. With iFIT, this treadmill is more than just a treadmill. It becomes an effective personal training tool for real results.