In the past, many suitcases only had two wheels. Now most modern suitcases use four wheels that can rotate in all directions.
With four wheels, the suitcase is easier to push without having to tilt it. The burden on your hands also feels lighter when walking at the airport or station.
This design makes the suitcase more stable, especially if the contents are quite heavy. We can also move it to the side or rotate it without needing much effort.
Even though it looks simple, the change from two wheels to four wheels has succeeded in making traveling much more comfortable.
Sometimes the best innovations are not the most complicated, but the ones with the most benefits in everyday life.
