Say "so long" to heavy boxy bags that opened at the top, which one would carry on while holding their handle on the top.  Travelpro's founder, Bob Plath, developed the original wheeled carry-on bag in 1989.  A pilot himself, Plath used a very clever marketing strategy.  He sold his bags at heavily discounted rates to flight crew, and as other people at airports saw flight crew with their roll-aboard bags, they too wanted them, especially when Travelpro advertised them as being the bags chosen by travel professionals.  The rest is history, and today Travelpro offers a wide range of well manufactured bags under its own name.