Comfort, convenience and an effective workout - It's not that much to ask for right? The GX 2.5 exercise bike combines comfort, convenience and an effective workout. With 20 built-in workouts designed by a Certified Personal Trainer and 20 digital resistance levels, all you have to do is step on and immediately customize your own workout. The GX 2.5 exercise bike is designed to keep you comfortable and focused on your workout. The oversized, cushioned seat adjusts both horizontally and vertically so you find the perfect fit. Find motivation in your favorite music by connecting your iPod to the incredible built-in sound system.