Experience an intense and effective workout with the Matrix S-Force Non-Folding Performance Trainer. Combining a magnetic resistance system and specifically designed motion, the S-Force is ideal for both low-impact and high-intensity exercises. Likewise, the magnetic resistance increases the more effort you put into it, producing challenging workouts that progress with you. Featuring a unique design, the S-Force allows you to practice intense performance training in two positions. The acceleration positions focus on the quads and shins while the upright position works on the hamstrings and calves. Additionally, the S-Force comes with an adjustable, backlit console so you can easily see your workout data and measure your improvement. Plus, it comes with quick keys so you can instantly access training programs by pressing a button. The S-Force is ideal for HIIT training in private and group settings.