Blue Lagoon 849 Set: A duo inspired by polar lagoons Caran d'Ache introduces Blue Lagoon, an exclusive set consisting of an 849 biros and a mechanical pencil, both inspired by the pastel colours of a blue lagoon, enhanced by a subtle yet intriguing gradation of colour. From frosty grey to polar blue, the Blue Lagoon set draws its magic from the mesmerising beauty of Arctic lagoons, capturing the calm and clarity of their subtle blue waters and inspiring inner peace. These two writing instruments complement each other perfectly in everyday use: with the Goliath ink refill for up to 600 A4 pages, the biros is both robust and durable. Equipped with an eraser, the mechanical pencil is ideal for creating precise technical drawings.