Dockers is getting back to its khaki roots. The 30-year-old Levi Strauss brand will release a global campaign Friday devoted to men’s casual pants. Titled “Always On,” the campaign highlights the Dockers Smart 360 Flex Khaki, a new collection that features four-way stretch. Slated for television, cinema and digital channels in the U.S. and internationally, the spots are intended to be humorous and connect with men “on an emotional level.”