Mechanical pencil with eraser. With the comfortable Sumo Grip you can carry on writing to your heart’s content! Sumo Grip represents a new generation of writing tools that stylishly combine comfort and strength. Thanks to the ergonomic contours of the grip, the pen is a natural fit for every unique writing style. As a result, Sumo Grip writes as lightly as a feather. It is for good reason that physical therapists recommend the Sumo Grip to patients with wrist complaints.