Hi! I am the SJ Gang OCEANLED GIRL 2WD- Wheeled Backpack, full of color and multipurpose. Indeed, in a few simple steps from I turn into a backpack and vice versa. My trolley has a reinforced bottom and corner protections to give stability to the wheeled backpack and protection to the contents. If you unhook the trolley, I become a washable backpack, super roomy, with a front pocket and comfortable to wear thanks to the padded back and shoulder straps. This latter, the shoulder straps, can be retractable when you use me as a trolley, or, thanks to the CROSSOVER SYSTEM, can automatically lifted up by pulling up the resistant double telescopic bar with two height adjustments, in order to not slide the belts on the ground. Last but not the least, with the maxi 10 cm wheels, you can easily drag me along all the routes of your day.