The mechanical pencil and retractable gel pens are launch Sumo Grip II retractable gel pen and mechanical pencil.  Fitting venue as sumo champions inspired product.  Sumo Grip II The retractable gel pen contains pigment-based gel ink that is chemical resistant, waterproof, light-fast and permanent. It prevents alterations, fading and check washing. Both the retractable pen and mechanical pencil come with sumo-sized comfort grips, eliminating hand strain. Launch date: June 7, 2008.