* Unlimited Resistance for upper and lower body extremities based on Air Resistance; Get a complete Cross-Fit Workout. * Drastically increase the intensity of your cardio workout with the Air Bike, achieve the same calorie interval goals in much less time. * Fully adjustable, comfy leather seat; wheels on the front to easily move around your home; rubber grips on handlebars for good grip; water bottle holder; digital display with external heart rate monitor compatibility. * Extremely smooth and stable ride - push as hard as you want and it will not give out.