Sherpa Music Note Marker Cover The Sherpa is a unique pen shell that holds a variety of disposable pens and markers including Sharpie, Pilot pen, Uni-ball pens and Accent highlighters. It comes in many different styles for you to enjoy. Each Sherpa is designed with an innovative cap to keep the color of your marker or pen bold and fresh every time. Sherpa your Sharpie and take your writing to the next level.