MVST SPACE Aluminum Silver SuitcaseBuilt for the realities of modern travel, this suitcase uses a heavy duty aluminum alloy hardshell to handle the punishment of baggage carousels and cargo holds. Rubber seals and a zipperless closure add structure and protection, while a one push TSA combination lock keeps contents secure without slowing security checks. Ultra smooth 360 spinner wheels move easily through crowded terminals and long concourses.