Souverän - A world-famous classic. The production of the Souverän sleeve is subject to an elaborate process. The typical, striped material is made out of cotton based on a formula developed specially for Pelikan. It takes month until the block providing the stripes is finished, whereupon the tailor-made plating is curved and cut into a contour using a natural diamond. The characteristic double rings are then integrated into the cap and barrel with the utmost precision. The writing instrument is then polished until it reaches a brilliant luster.The ball pen K400 with push-button mechanism comes with a large capacity black refil Pelikan K400 Black Clip-on retractable ballpoint pen 1 pc(s).