Target your upper and lower body muscles simultaneously and elevate your fitness with the Reebok FR20 elliptical cross trainer. Featuring a 6kg (13lbs) flywheel, 8 levels of manually controlled resistance and a 38cm (15') stride, the FR20 ensures a silky-smooth and natural ride ...Target your upper and lower body muscles simultaneously and elevate your fitness with the Reebok FR20 elliptical cross trainer. Featuring a 6kg (13lbs) flywheel, 8 levels of manually controlled resistance and a 38cm (15') stride, the FR20 ensures a silky-smooth and natural ride.