Do you carry a Sharpie Marker? Slip it into a Sherpa pen shell and dress it up! The Sherpa pen shell that holds a variety of disposable pens and markers including Sharpie, Pilot pen, uni-ball pens and Accent highlighters as its refill. Sherpa 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.