Goldfish G-FP-01 Flupa Fountain Pen has an Advanced ink flow system for smooth and fluid writing. Environmentally friendly. Refillable with ink cartridges. Quick cartridge reloading system. Visible ink supply. A specially designed ink controller ensures the ink. Released evenly till the last drop. Iridium Tipped Nib allows smooth and resistance-free writing. Supper Smooth Flow. Available in pink, blue, orange & green body colors.