Tegra-Max International Expandable Traveler Black Graphite. This Tegra-Max case is the most durable and fully functional hardside case made today. Expandable, spacious, accessible front pocket, moves effortlessly in every direction on double turning wheels. Constructed a revolutionary composite material. This compact wheeled carry-on design is for those who travel domestically and internationally. It expands 2 for extra capacity when you need it and has