Functions as both a book bag on wheels for school and a fun carry-on backpack for kids. Comes with a matching kids lunch bagMain compartment holds 2 big text books, a laptop, lunch and many small items. Measures 18 x 13 x 9 inches. Yet roller backpack is small enough for school kids to pullIncludes a main zippered compartment, a large exterior zipper pocket, 2 side pockets, plus an internal organizer with key clip, pen slots and pouches for small itemsInsulated lunch box for kids holds a sandwich, snacks and drink. Attaches securely to wheeled backpack with clips. Measures 9 x 8 x 3.5 inchesMolded rubber bottom holds up to the punishment of dragging on pavement and up stairs. No more holes in the bottom of your kids rolling bookbag!A single-tube aluminum handle extends to 34 or 39 inches to be easily pulled by kids or adults. Suitcase handle stores nested in bagPull out kids backpack straps in seconds when going up stairs. To roll backpack again, just tuck straps away in slot on back of rolling backpack-no having to Noiseless rubber backpack wheels roll and turn effortlessly on sidewalks, paths and airplane aisles. Wheels can be replaced