Exterior shell is made from lightweight ABS to handle travel wear and tear. Eight 360-degree spinner wheels provide maximum maneuverability. Push button, locking aluminum, telescopic handle. Hybrid, split-case design makes packing and unpacking easy. Zippered divider panel with mesh pocket keeps contents in place. Elastic tie-down strap keep contents in place. Zippered interior accessory pocket. Expands for additional packing space. Co-molded top handle with soft rubber grip. Includes: 18" Carry--on spinner. 24" Expandable spinner. 27" Expandable spinner.