The Trolley Seven Jack-2WD is a backpack with a detachable trolley equipped with 10 cm wheels. The backpack is roomy, to be filled with what you need: books, notebooks for school, or change for training. Both padded, backrest and shoulder straps also make the backpack comfortable to wear on the shoulders, while if you attach it to the trolley equipped with double telescopic bar, corner guards and reinforced bottom is handy, stable, practical and safe to drag as a trolley.