eV3 Endovascular is a leading worldwide medical device company focused on catheter-based or endovascular technologies for the minimally invasive treatment of vascular disease and disorders. This direct mail campaign was targeted at neurosurgeons. Each package consisted of a folding postcard highlighting one specific feature of the product, along with a simple puzzle illustrating the feature. Clever copywriting reinforced the message. For example, the headline highlighting how exceptionally small the diameter of the product's opening is reads: "The Echelon is Diametrically DIfferent."