Pelikan Souverän M605 Special Edition Fountain Pen - Green-WhiteThis distinctive new fine writing instruments series will convince you. These colours will brighten your day! The white parts are made of high quality resin that is first turned and then polished to a high sheen. The barrel with the white and green stripes is made of cellulose acetate that was very carefully manufactured and turned into a sleeve. The characteristic double rings at the back of the barrel and on the cap are integrated into the material.