Swiss Army Knife Backpack Large Capacity Business Travel Computer Junior High School Student Schoolbag Lightweight Business Travel Mens Backpack

black 16inch small size (height 46, width 30, thickness 18cm ) black 18inch large (height 49width 32thickness 20cm ) black 20inch extra large size (height 52, width 34, thickness 22cm ) black 23inch extra large (height 58, width 37, thickness 25cm ) black 25inch extra large size (height 60, width 39, thickness 30cm ) There is an error of 1- 2cm due to manual measurement