It was decided with the company that there would be a test launch of the product in 1977 in four American cities. Sales of this innovative product in test cities were less than stellar, most likely because the product, while innovative, was also quite unfamiliar. A final attempt was then made in the city of Boise to introduce to the product. In this attempt, 3M salesmen gave demonstrations of the product in offices throughout Boise and gave away free samples of the product. When the salesmen returned a week later to the offices where the product had been demonstrated and given away, a huge percentage of the office workers, having noted how useful the simple little product could be, were interested in purchasing it. Over time, 3M came to understand the huge potential of this new product, and over the next few decades more that 400 varieties of Post-it products – in different colors, shapes, and sizes – have been developed