One of the Most Comfortable and Fully Featured Upright Bikes Available. The U1000 is a Full Commercial Upright Bike that Features an Ultra-Wide Extra Padded Comfort Seat with Gas-Assist Height Adjustment System. Driven by Our Commercial Low Vibration Generator with 30 Levels of Impact Free Resistance, the U1000 is Perfect for the Beginner to Advanced Fitness Enthusiast. The Design, Features, and Ergonomics of the U1000 Ensure a Comfortable, Quiet, and Smooth Workout.