The TWSBI ECO fountain pens is know for its high-quality, high-capacity piston filler for an affordable price. Easy for beginners and loved by experts this ideal everyday pen is easy to fill, no need for cartridges or convertors. Simply twist the end cap, dip into ink, and twist back the end cap.  Features a crystal clear acrylic barrel that allows you to see your ink level. The screw on pen cap has an inner cap to ensure a perfect seal when stored away, and it sits on the back of the pen. This limited edition pen features marbled brown enhanced by bronze.