Rolling Backpack: A convertible wheeled backpack that combines the load-carrying capacity of a rolling bag with the portability of a school backpack. Perfect for kids and adults who carry a lot. Large Capacity: Main compartment fits 2 large textbooks, a laptop, lunch, and many small items. Measures 18 x 13 x 9 inches. Can be used as underseat carry-on luggage when traveling. Smart Organization: Front organizer pocket with key clip, pen holders, card slots, and an internal zip pocket keeps small items secure. Includes 2 mesh side pockets for water bottles. Durable Water-Resistant: Constructed from tough ripstop polyester fabric with a metal frame and reinforced edges. Coated for water resistance to protect your gear. Adjustable Handle: Single-tube aluminum handle extends to 34 or 39 inches for easy maneuverability by kids and adults up to 6'3". The handle stores neatly in a nested compartment when not in use. Comfort Convenience: Cushioned air mesh shoulder straps and back pad, along with a slip-in system, offer versatile carrying options. You can also carry it like a suitcase with the padded handle. Effortless Rolling: Large rubber wheels roll smoothly and turn effortlessly on sidewalks, paths, and airplane aisles. Corner-mounted wheels add extra stability. Size: 18" x 13" x 9"