The new Power Arc Expert expands on the success of our original Power saddle. It features the same channel and length as the original. If you're already a Power loyalist this iteration features a curved Body Geometry shape that better contours to your body. What does this mean for your ride? It means that you'll feel as if you're "in the saddle" and not on it. And ultimately this equates to greater comfort and superior performance in all seated positions whether you're a man or woman. Specialized Power Arc Expert Bicycle Saddle in Black