The TWSBI ECO Fountain Pen - Dark Sapphire is more than just a writing tool, it's a fashion accessory that allows you to express your creativity. With a transparent body that shows the ink levels and a piston-filling system for easy refills, this pen is both functional and stylish. Its steel nib allows for smooth writing, while the screw-on cap keeps the pen safe when not in use. Plus, its stunning blue color is sure to make a statement. Invest in the TWSBI ECO Dark Sapphire Fountain Pen and elevate your writing experience with a high-quality, durable pen.