I find these ads for Bic pens brilliant. The lifespan of the ubiquitous ballpoint pens are tested to last for two kilometres, a distance equivalent to six Eiffel Towers, two Tower Bridges or four Empire State Buildings. What a clever and effective way to describe just how long the pens should last. The sole use of the very recognizable Bic pen blue across the entire ad (even the logo) is a final brilliant touch of brand in a fantastic ad campaign.

(images via ads of the world)