The SportsArt C521u Cycle patented adjustable mesh seat back with comfortable, breathable mesh provides air flow throughout the workout to keep you cool and comfortable. Multiple programs on the SportsArt C521u Cycle keeps your workouts fresh.Unique step-through design allows easy access. Lumbar pouch allows for hot or cold packs and supports low back. The SportsArt C521u Cycle features a state-of-the-art tri-color dot matrix display with Personal CardioAdvisor for accurate heart rate feedback.