The medium 1.0 mm point glides across the page with unmatched comfort for smooth smudge-free writing The super-durable BIC Cristal Original pen has enough ink to write for an average of 3 km (black and blue cartridges only) Efficient design that’s simple and trusted. Includes a clear barrel for checking your ink level Made with minimal materials and proudly certified by the NF Environnement eco-label