Tunturi Unique: Pure Scandinavian Design Comfort. Shock-absorbing T-Flex running base. Orthopedic belt gives an extra touch of running comfort. Very silent operation system with a strong motor. Safe: Simple folding mechanism with a safe double-locking system immobilizes the belt - superb safety feature for families with children. Simple: Position speed control (PSC): Tunturio's patented hands-free speed control system Pro-active: it slows down when the user slows down, it accelerates when the user speeds up the pace. Always efficient and effective training. Large control keys within easy-to-reach distance during training.