Fabric: 1600 Denier Polyester water and tear resistant Recessed locking handle system provides easy maneuverability. Expands 3 for additional packing capacity when needed. Internal aluminum handle system gives extra protection for the handle Super Strong wheels with full impact-resistant wheel guards provide smooth, quiet rolling. Steel frame with full poly-board protection provide excellent durability. Fully lined, designer nylon interior helps protect contents. Multiple exterior zippered pockets provide added storage and organization. Removable attachable strap carries an additional bag. Self-repairing super heavy-duty zippers. Combination Padlock included