The Adidas Samba is among Adidas' most popular shoes. The Stan Smith model is the second best-selling Adidas design of all time with over 35 million pairs sold worldwide. The shoe was first produced in 1949 to enable footballers to train on icy, hard surfaces (hence the suction design on the rubber sole). The original design featured the classic three stripes, as well as the golden trefoil on the foldable tongue. As the years progressed, the Samba evolved and continues to be produced in a variety of classic and new colorways.