The classic BIC Cristal Original pen with its clear barrel is the world’s best-selling ballpoint pen, and this pouch contains 4 pens (1 blue, 1 black, 1 red and 1 green ink). These lightweight pens has enough ink to write for an average of 3 km (blue and black ink only), plus is certified with the NF Environnement eco-label. The minimal design of this iconic object has made it part of the permanent collections at the New York Museum of Modern Art (MoMA) and the Musée d'Art Moderne/Pompidou Centre in Paris.