Indulge yourself with the smooth comfort of this delightfully designed Dr. Grip Frosted advanced ink pen. Light and airy pastel barrel colors. All come with black ink and the most popular medium point size. The ergonomic cushioned grip alleviates writing stress while the advanced ink glides on the page. Purple Barrel. Pen Sub-Brand & Product Family: Dr. Grip® Frosted Advanced Ink; Pen Type: Ballpoint Pen; Pen Style: Retractable; Pen Tip Type: Conical.