When it comes to cutting-edge athletic footwear, Reebok and its competitors - Nike being the most prominent among them - have been at the forefront of industry-shaking innovations that literally change the way people wear (and buy) sneakers. But few innovations have caused a stir quite like the Reebok Pump. On its way to becoming a veritable game-changer, the Pump - introduced at the tail-end of the 1980s - featured technologies that many brands, including arch-rival Nike, had been tiptoeing around for years.