In 1970, Bernard D. Sadow innovated a traditional suitcase on wheels attached to a long strap. In 1972, Sadow patented his invention as the Rolling Luggage. In 1987, Robert Plath updated Sadow's design by placing the suitcase vertically, attaching two wheels and building a retractable handle.

While wheels were first patented for luggage in 1970 by Bernard Sadow, they did not become the universal industry "standard" until the early-to-mid 1990s. Sadow’s initial design featured four wheels and a pull-strap, which was often top-heavy and difficult to maneuver. The true revolution occurred in 1987, when Northwest Airlines pilot Robert Plath invented the "Rollaboard." Plath’s design turned the suitcase on its side, used two sturdy wheels, and added a telescoping handle, allowing the bag to be pulled upright. Initially, these were only used by flight crews, but as passengers saw how easily pilots navigated airports, demand skyrocketed. By 1993, nearly every major luggage brand had shifted their primary production to wheeled models. The adoption was also driven by the growth of "mega-airports" and a shift in gender norms; before the 1970s, it was considered "unmanly" to not carry your own heavy bags, but by the 90s, the sheer convenience of wheels had won over every demographic of traveler.