Large Capacity Mens Business Travel Backpack Shoulder Bag with Computer Compartment Casual Simple Style Waterproof Outdoor Bag

black 16inch small size (height 46, width 31, thickness 19cm ) black 18inch large size (height 49*width 33 thick 21cm ) black 20inch extra large size (height 53, width 35, thickness 26cm ) black 23inch extra large size (height 57, width 37, thickness 33cm ) black 25inch extra large size (height 60, width 38, thickness 35cm )