Our Keyboard cases are built with the classic hinged style. If it ain't broke, don't fix it. The recessed wheels and our high quality material make this case the standard for touring and protecting your keyboard or synth. The case comes standard with 3" suitcase style corner casters, steel handles, and steel recessed twist latches. As with all of our cases, it boasts the strength stability to endure the toughest tours, and meet ATA 300 (flight) standards.