Double Wheels Front Pocket with Organizer Side Mesh Pockets Shoulder Strap Size: Medium Exterior Dimensions: 17" x 13" x 10" Linear Inches: 40" Weight: 5 lbs Material: Polyester Warranty: 3 Year limited warranty Perfect for all types of casual travel, this backpack can be carried on the back or wheeled along behind you. The Rockland Luggage Roadster 17" Rolling Backpack is made from polyester fabric and features a classic shape with a modern design that includes comfortable shoulder straps, a retractable pull handle, and smooth rolling wheels that make it easy to maneuver. This backpack has a medium sized main compartment to hold books and folders for school or clothing for an overnight trip, two front zipper pockets to hold small items and accessories, and side mesh pockets to hold water bottles or other slim items.