Features:9mm birch plywood with black HPL exterior finish.Penn-Elcom hardware including spring loaded handles and tough butterfly catches.Four, 4" swivel castors.30mm Aluminum edge extrusion.Hinged lid with large catches and stays.Built to survive the tough conditions of touring.Overall weight: 34 lbs. Dimensions:Internal - 13.4" x 15.7" x 19.7".External - 22.8" x 17.2" x 21.1".